Numbers / 499

The Number 499

499 is prime: only 1 and 499 divide it evenly; the next prime after 499 is 503. 499's proper divisors total just 1, 498 short of 499, the deficient case most of 499's neighbors share too. 499 has a digit sum of 22; for 499, the digital root works out to 4. 499 shares no factor with 2-12; 499's own divisors start beyond that range. 499 is 111110011 in binary and 1F3 in hex; as a Roman numeral it's CDXCIX.