879

879 = 3 x 293.

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

The fifth root of 879 has a decimal part that begins with the digits 879: 3.879696696. . .

The sum of the digits of 879 is 8 times the number of digits: 8 + 7 + 9 = 24 = 8 x 3.

879 is a number n such that n - 2 and n + 2 are primes: 877 and 881.

NGC 879 is a galaxy in the constellation Cetus, discovered in 1886.

Source: What's Special About This Number?