869055870 has 32 divisors (see below), whose sum is σ = 2086681248. Its totient is φ = 231643008.

The previous prime is 869055821. The next prime is 869055917. The reversal of 869055870 is 78550968.

It is a congruent number.

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, 78732 + ... + 89088.

It is an arithmetic number, because the mean of its divisors is an integer number (65208789).

Almost surely, 2^869055870 is an apocalyptic number.

869055870 is an abundant number, since it is smaller than the sum of its proper divisors (1217625378).

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

869055870 is a wasteful number, since it uses less digits than its factorization.

869055870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13164.

The product of its (nonzero) digits is 604800, while the sum is 48.

The square root of 869055870 is about 29479.7535607067. The cubic root of 869055870 is about 954.2948185415.

The spelling of 869055870 in words is "eight hundred sixty-nine million, fifty-five thousand, eight hundred seventy".