869772 has 12 divisors (see below), whose sum is σ = 2029496. Its totient is φ = 289920.

The previous prime is 869753. The next prime is 869773. The reversal of 869772 is 277968.

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

It is a self number, because there is not a number n which added to its sum of digits gives 869772.

It is not an unprimeable number, because it can be changed into a prime (869773) by changing a digit.

869772 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36229 + ... + 36252.

2⁸⁶⁹⁷⁷² is an apocalyptic number.

It is an amenable number.

869772 is an abundant number, since it is smaller than the sum of its proper divisors (1159724).

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

869772 is a wasteful number, since it uses less digits than its factorization.

869772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72488 (or 72486 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 869772 is about 932.6156764713. The cubic root of 869772 is about 95.4556869787.

The spelling of 869772 in words is "eight hundred sixty-nine thousand, seven hundred seventy-two".