440 (number)

This article is about the number. For other uses, see 440 (disambiguation).
← 439 440 441 →
Cardinalfour hundred forty
Ordinal440th
(four hundred fortieth)
Factorization23 × 5 × 11
Divisors1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440
Greek numeralΥΜ´
Roman numeralCDXL
Binary1101110002
Ternary1210223
Senary20126
Octal6708
Duodecimal30812
Hexadecimal1B816
Hebrewמת (Tav)(Mem)

440 (four hundred [and] forty) is the natural number following 439 and preceding 441.

In mathematics

440 has the factorization 23 · 5 · 11.

440 is:

In science

  • A440 (pitch standard) widely used for the musical note A4, the A above Middle C, often used for tuning instruments

References

  1. ^ "Facts about the number 440". Numbermatics - the number explorer. Retrieved 21 March 2017.
  2. ^ Guy, Richard (9 March 2013). Unsolved Problems in Number Theory. Springer Science & Business Media. p. 358. ISBN 9780387266770.