400 (number)

Mathematical properties

Other fields

• The Four Hundred of ancient Athens.
• An HTTP status code for a bad client request.
• The Four Hundred a phrase meaning the wealthiest, most famous, or most powerful social group, leading to the generation of such lists as the Forbes 400.
• The Atari 400 home computer.
• A former limited stop bus route which operated from Bolton to Stockport and Manchester Airport from 1970 to 2004, known as the Trans-Lancs Express.
• in the title of the film Les Quatre Cent Coups, a French film directed by François Truffaut.
• A Lebanese card game. 400
• the designation for a class of Ontario highways called 400-Series Highways.
• The 400, later the Twin Cities 400, a Chicago and North Western Railway passenger train that traveled 400 miles between Minneapolis/St. Paul and Chicago, Illinois in 400 minutes.
• The yard number of the RMS Olympic, the RMS Titanic's sister ship.
• .400 is a numerically significant annual batting average statistic in Major League Baseball, last accomplished by Ted Williams of the Boston Red Sox in 1941.
• The number of days in a Gregorian calendar year changes according to a cycle of exactly 400 years, of which 97 are leap years and 303 are common.
• The Intertestamental period or period of time between the writings of the Hebrew Bible and the Christian New Testament texts is traditionally considered to be a roughly four hundred-year period.
• The Sun is approximately 400 times the size of the Moon but also is approximately 400 times further away, creating the temporary illusion in which the Sun and Moon in Earth's sky appear as if of similar size.
• In gematria 400 is the largest single number that can be represented without using the Sophit forms.

  Integers from 401 to 499

400s

401

• HTTP status code for "Unauthorized", area code for Rhode Island, also in the name of a retirement plan, 401. Stephen Colbert's Formula 401, a "man seed" based product brand his persona on The Colbert Report promotes for sale to the public .
• Ontario Highway 401, colloquially referred to as the four-oh-one, is a popular Canadian highway 817.9 kilometres that stretches from Windsor to the Quebec border, passing through Toronto. It turns into Quebec Autoroute 20 at the Quebec/Ontario border which leads to the cities of Montreal and Quebec.

  402

• HTTP status code for "Payment Required", area code for Nebraska

  403

• First number that is the product of an emirp pair.
• HTTP 403, the status code for "Forbidden"
• Also in the name of a retirement plan in the United States, 403.
• The area code for southern Alberta.

  404

• HTTP status code for "Not Found", perhaps the most famous HTTP status code.
• Section 404 of the Sarbanes–Oxley Act.
• One of the three area codes of the Atlanta calling area.

  405

• HTTP status code for "Method Not Allowed".
• Area code for central Oklahoma, including Oklahoma City and surrounding suburbs.

  406

• HTTP status code for "Not Acceptable".
• is a poem by John Boyle O'Reilly. It was believed to have been the number of one of O'Reilly's prison cells, and was the number of his first hotel room after he arrived in the United States. Hence the number had a mystical significance to him, as intimated in the poem.
• See also the Peugeot 406 car.
• Area code for all of Montana.

  407

• sum of cubes of 4, 0 and 7 ; narcissistic number
• sum of three consecutive primes
• Mertens function returns 0
• Harshad number
• HTTP status code for "Proxy Authentication Required"
• Area code for Orlando, Florida
• Colloquial name for the Express Toll Route in Ontario

  408

• Sum of four consecutive primes
• Sum of eight consecutive primes
• Pell number
• Mertens function returns 0
• Octagonal number
• Untouchable number
• Harshad number
• HTTP status code for "Request Timeout"
• Area code for the Silicon Valley

  409

• A family of cleaning products, Formula 409
• An engine known as the Chevrolet 409, a 409 cubic inch W-series V8.
• The song "409" by The Beach Boys, inspired by the above engine
• HTTP status code for "Conflict"
• A Green Day song, 409 in Your Coffeemaker, included on their album 1,039/Smoothed Out Slappy Hours
• The area code for a part of eastern Texas
• Venice has 409 bridges.
• A Bullet For My Valentine song, "Room 409", from the album The Poison
• Joe Paterno holds the record as the winningest head coach in NCAA FBS with 409 victories.

  410s

410

• HTTP status code for "Gone".
• Area Code 410, a telephone area code for the US State of Maryland, representing portions of the state including the Baltimore metropolitan area and the Eastern Shore.

  411

• HTTP status code for "Length Required", slang for information
• The number of possible FM broadcasting frequencies between 87.50 and 108.00 MHz in 50 kHz spacing countries

  412

• HTTP status code for "Precondition Failed"
• Area code for Pittsburgh, Pennsylvania.
• Fictitious Police Code for "Overacting" from "" - Stan Freeberg

  413

• HTTP status code for "Request Entity Too Large"
• Area code for Western Massachusetts.

  414

• HTTP status code for "Request-URI Too Long"
• Area code for Milwaukee, Wisconsin.
• The 414s, a group of hackers from Milwaukee, Wisconsin.

  415

• HTTP status code for "Unsupported Media Type"
• 415 Records, a record label
• 415 refers to California Penal Code, section 415, pertaining to public fighting, public disturbance, and public use of offensive words likely to provoke an immediate violent reaction.
• Area code 415, a telephone area code for San Francisco, California

  416

• HTTP status code for "Requested Range Not Satisfiable"
• 416 is also a nickname for the city of Toronto, based on the area code it used before overlay plans added two more area codes.

  417

• HTTP status code for "Expectation Failed". Also the area code for southwestern Missouri, including Springfield, and Joplin.

  418

• the number of Abrahadabra
• Hyper Text Coffee Pot Control Protocol status code for "Teapot" as an April Fools' joke.

  419

• refers to the Nigerian advance fee fraud scheme

  420s

420

421

• A prime number, sum of five consecutive primes, centered square number, also SMTP code meaning the transmission channel will be closing
• Country calling code for Slovakia

  422

423

• Country calling code for Liechtenstein

  424

425

• 425 is an area code in Washington State.

  426

427

428

• , a video game

  429

430s

430

431

• It is also the fourth Leyland prime of the second kind.
• The distance between Earth and the star Polaris in light years.
• Area code 431 is a telephone area code for Manitoba, Canada.

  432

433

• The perfect score in the game show Fifteen To One, only ever achieved once in over 2000 shows.
• 433 can refer to composer John Cage's composition 4′33″.

  434

435

436

437

438

• The "438 match" or "438 game" has been used by cricket media to describe the famous 2006 One Day International in which Australia scored a world record 434 in their innings, only to see South Africa respond in their innings with 438.

  439

440s

440

• in hertz, the standard frequency to which most orchestras tune the pitch A above middle C. A few orchestras tune slightly flatter or sharper than this.

  441

• 441 is the sum of the cubes of the first 6 natural numbers.
• 441 is a centered octagonal number, a refactorable number, and a Harshad number.
• 441 is the number of squares on a Super Scrabble board.

  442

443

• In computing, it is the default port for HTTPS connections.

  444

445

446

447

448

449

450s

450

• SMTP code meaning the requested mail action was not carried out.
• A perfect score in Canadian five-pin bowling.
• An area code in Southern Quebec.

  451

• The novel Fahrenheit 451 refers to the temperature in Fahrenheit that author Ray Bradbury understood to be the autoignition point of paper.
• HTTP status code for "Unavailable For Legal Reasons" a HTTP response error when the user requests an illegal resource, such as a web page censored by a government.

  452

• SMTP code meaning that the requested mail action was not carried out because of insufficient system storage

  453

454

455

• 455 Rocket is the title of a song by Kathy Mattea
• 455 kHz is a standard intermediate frequency for analog superheterodyne AM broadcast band receivers.

  456

457

• A prime number, sum of three consecutive primes, self number.
• The international standard frequency for radio avalanche transceivers.

  458

459

• 459 West 18th Street, a residential building at that address in Manhattan's West Chelsea neighborhood, built in 2008.

  460s

460

461

462

463

• Number of days in the synodic period of Ceres
• A common baseball double play
• A single by Buck 65, named after the baseball term

  464

• In chess it is the number of legal positions of the kings, not counting mirrored positions. Has some importance when constructing an endgame tablebase.
• See also: 4-6-4, the year AD 464.

  465

466

467

468

469

470s

470

• In golf, 470 is the minimum length in yards from the tee to the hole on a Par 5.
• 470 is an Olympic class of sailing dinghy

  471

472

473

474

475

476

477

478

479

• Also an area code in the U.S. state of Arkansas.

  480s

480

481

482

483

484

485

• RS-485

  486

• Shorthand for the Intel 80486 microprocessor chip.

  487

• The only primes under 7.74 × 10¹³ that divide their own decimal repetends are 3, 487, and 56598313.
• Shorthand for the Intel 80487 floating point processor chip.

  488

489

490s

490

• The Christian Gospel of Matthew says that Jesus told Peter to forgive his brother "seventy times seven" times when his brother sins against him .

  491

492

493

494

495

496

497

498

499