870464844 has 36 divisors (see below), whose sum is σ = 2220538320. Its totient is φ = 287491680.

The previous prime is 870464827. The next prime is 870464851. The reversal of 870464844 is 448464078.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 870464844.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106992 + ... + 114839.

It is an arithmetic number, because the mean of its divisors is an integer number (61681620).

Almost surely, 2^870464844 is an apocalyptic number.

It is an amenable number.

870464844 is an abundant number, since it is smaller than the sum of its proper divisors (1350073476).

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

870464844 is a wasteful number, since it uses less digits than its factorization.

870464844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221950 (or 221945 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 45.

The square root of 870464844 is about 29503.6411990114. The cubic root of 870464844 is about 954.8102631933.

The spelling of 870464844 in words is "eight hundred seventy million, four hundred sixty-four thousand, eight hundred forty-four".