869172 has 12 divisors (see below), whose sum is σ = 2028096. Its totient is φ = 289720.

The previous prime is 869153. The next prime is 869173. The reversal of 869172 is 271968.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 869172.

It is not an unprimeable number, because it can be changed into a prime (869173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36204 + ... + 36227.

It is an arithmetic number, because the mean of its divisors is an integer number (169008).

2⁸⁶⁹¹⁷² is an apocalyptic number.

It is an amenable number.

869172 is an abundant number, since it is smaller than the sum of its proper divisors (1158924).

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

869172 is a wasteful number, since it uses less digits than its factorization.

869172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72438 (or 72436 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 869172 is about 932.2939450624. The cubic root of 869172 is about 95.4337323412.

The spelling of 869172 in words is "eight hundred sixty-nine thousand, one hundred seventy-two".