799

799 = 17 x 47.

799 is the smallest number with a composite sum of digits (7 + 9 + 9 = 25) and a prime sum of cubes of digits (7³ + 9³ + 9³ = 1801).

799 is the smallest number whose sum of digits is 25.

799 is a number that cannot be written as a sum of three squares.

799 is the sum of 11 positive fifth powers: 799 = 3⁵ + 3⁵ + 3⁵ + 2⁵ + 2⁵ + 1⁵ + 1⁵ + 1⁵ + 1⁵ + 1⁵ + 1⁵.

NGC 799 is a spiral galaxy in the constellation Cetus.

Source: Number Gossip