869916 has 12 divisors (see below), whose sum is σ = 2029832. Its totient is φ = 289968.

The previous prime is 869909. The next prime is 869927. The reversal of 869916 is 619968.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36235 + ... + 36258.

2⁸⁶⁹⁹¹⁶ is an apocalyptic number.

It is an amenable number.

869916 is an abundant number, since it is smaller than the sum of its proper divisors (1159916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

869916 is a wasteful number, since it uses less digits than its factorization.

869916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72500 (or 72498 counting only the distinct ones).

The product of its digits is 23328, while the sum is 39.

The square root of 869916 is about 932.6928754955. The cubic root of 869916 is about 95.4609545892.

The spelling of 869916 in words is "eight hundred sixty-nine thousand, nine hundred sixteen".