869164290 has 32 divisors (see below), whose sum is σ = 2317772160. Its totient is φ = 231777072.

The previous prime is 869164271. The next prime is 869164301. The reversal of 869164290 is 92461968.

It is a happy number.

It is a super-2 number, since 2×869164290² = 1510893126022408200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1609294 + ... + 1609833.

It is an arithmetic number, because the mean of its divisors is an integer number (72430380).

Almost surely, 2^869164290 is an apocalyptic number.

869164290 is an abundant number, since it is smaller than the sum of its proper divisors (1448607870).

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

869164290 is a wasteful number, since it uses less digits than its factorization.

869164290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219143 (or 3219137 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 869164290 is about 29481.5923925422. The cubic root of 869164290 is about 954.3345015836.

The spelling of 869164290 in words is "eight hundred sixty-nine million, one hundred sixty-four thousand, two hundred ninety".