440 (number)

Short description: Natural number

← 439 440 441 →
List of numbers — Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	four hundred forty
Ordinal	440th (four hundred fortieth)
Factorization	23 × 5 × 11
Divisors	1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440
Greek numeral	ΥΜ´
Roman numeral	CDXL
Binary	1101110002
Ternary	1210223
Quaternary	123204
Quinary	32305
Senary	20126
Octal	6708
Duodecimal	30812
Hexadecimal	1B816
Vigesimal	12020
Base 36	C836
Hebrew	מת (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:

• Even
• The sum of the first 17 prime numbers
• A harshad number
• An abundant number
• A happy number

In science

• A4 is the name of the A note above Middle C. This note is often used for tuning instruments. It has a hertz value of 440 Hz.