400 (number)
This article is about the numbers 400 to 499. For the year 400 AD, see 400. Natural number ← 399 400 401 → List of numbers — Integers ← 0 100 200 300 400 500 600 700 800 900 → Cardinal four hundred Ordinal 400th (four hundredth) Factorization 2 4 × 5 2 Divisors 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400 Greek numeral Υ´ Roman numeral CD Binary 110010000 2 Ternary 112211 3 Quaternary 12100 4 Quinary 3100 5 Senary 1504 6 Octal 620 8 Duodecimal 294 12 Hexadecimal 190 16 Vigesimal 100 20 Base 36 B4 36 Hebrew ת (Tav) 400 ( four hundred ) is the natural number following 399 and preceding 401. .mw-parser-output .toclimit-2 .toclevel-1 ul,.mw-parser-output .toclimit-3 .toclevel-2 ul,.mw-parser-output .toclimit-4 .toclevel-3 ul,.mw-parser-output .toclimit-5 .toclevel-4 ul,.mw-parser-output .toclimit-6 .toclevel-5 ul,.mw-parser-output .toclimit-7 .toclevel-6 ul{display:none} ...