Numbers / 433

The Number 433

433 is prime: only 1 and 433 divide it evenly; the next prime after 433 is 439. 433's proper divisors total just 1, 432 short of 433, the deficient case most of 433's neighbors share too. 433 has a digit sum of 10; for 433, the digital root works out to 1. 433 shares no factor with 2-12; 433's own divisors start beyond that range. 433 is 110110001 in binary and 1B1 in hex; as a Roman numeral it's CDXXXIII.