969

969 = 3 x 17 x 19.

969 and 970 have three distinct prime factors (A140077).

969 is the 17th tetrahedral number (A000292). It is the smallest multidigit tetrahedral palindrome.

969 is a nonagonal number (A001106).

The 18th Mersenne prime has 969 digits (A028335).

The sum of the digits of 969 equals the number of digits times 8 (A061425).

Source: Number Gossip