Numbers / 269

The Number 269

269 is prime: only 1 and 269 divide it evenly; the next prime after 269 is 271. 269's proper divisors total just 1, 268 short of 269, the deficient case most of 269's neighbors share too. 269 has a digit sum of 17; for 269, the digital root works out to 8. 269 shares no factor with 2-12; 269's own divisors start beyond that range. 269 is 100001101 in binary and 10D in hex; as a Roman numeral it's CCLXIX.