Numbers / 437

The Number 437

437 is composite: factorization 19 × 23. That gives 437 exactly 4 divisors: 1, 19, 23, 437. 437's proper divisors total just 43, 394 short of 437, the deficient case most of 437's neighbors share too. 437 has a digit sum of 14; for 437, the digital root works out to 5. 437 shares no factor with 2-12; 437's own divisors start beyond that range. 437 is 110110101 in binary and 1B5 in hex; as a Roman numeral it's CDXXXVII.