400 (number)

natural number

400 (four hundred) is the natural number after 399 and before 401.

← 399 400 401 →
Cardinalfour hundred
Ordinal400th
(four hundredth)
Factorization24× 52
Divisors1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400
Greek numeralΥ´
Roman numeralCD
Binary1100100002
Ternary1122113
Quaternary121004
Quinary31005
Senary15046
Octal6208
Duodecimal29412
Hexadecimal19016
Vigesimal10020
Base 36B436