Numbers / 449

The Number 449

449 is prime: only 1 and 449 divide it evenly; the next prime after 449 is 457. 449's proper divisors total just 1, 448 short of 449, the deficient case most of 449's neighbors share too. 449 has a digit sum of 17; for 449, the digital root works out to 8. 449 shares no factor with 2-12; 449's own divisors start beyond that range. 449 is 111000001 in binary and 1C1 in hex; as a Roman numeral it's CDXLIX.