Numbers / 493

The Number 493

493 is composite: factorization 17 × 29. That gives 493 exactly 4 divisors: 1, 17, 29, 493. 493's proper divisors total just 47, 446 short of 493, the deficient case most of 493's neighbors share too. 493 has a digit sum of 16; for 493, the digital root works out to 7. 493 shares no factor with 2-12; 493's own divisors start beyond that range. 493 is 111101101 in binary and 1ED in hex; as a Roman numeral it's CDXCIII.