Numbers / 929

The Number 929

929 is prime: only 1 and 929 divide it evenly; the next prime after 929 is 937. 929's proper divisors total just 1, 928 short of 929, the deficient case most of 929's neighbors share too. 929 is also a palindrome, since 929 reads identically forwards and backwards. 929 has a digit sum of 20; for 929, the digital root works out to 2. 929 shares no factor with 2-12; 929's own divisors start beyond that range. 929 is 1110100001 in binary and 3A1 in hex; as a Roman numeral it's CMXXIX.