Numbers / 479

The Number 479

479 is prime: only 1 and 479 divide it evenly; the next prime after 479 is 487. 479's proper divisors total just 1, 478 short of 479, the deficient case most of 479's neighbors share too. 479 has a digit sum of 20; for 479, the digital root works out to 2. 479 shares no factor with 2-12; 479's own divisors start beyond that range. 479 is 111011111 in binary and 1DF in hex; as a Roman numeral it's CDLXXIX.