858944964 has 24 divisors (see below), whose sum is σ = 2007398848. Its totient is φ = 285858720.

The previous prime is 858944917. The next prime is 858944969. The reversal of 858944964 is 469449858.

858944964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×858944964² = 1475572902361922592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (858944969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49147 + ... + 64290.

Almost surely, 2^858944964 is an apocalyptic number.

It is an amenable number.

858944964 is an abundant number, since it is smaller than the sum of its proper divisors (1148453884).

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

858944964 is a wasteful number, since it uses less digits than its factorization.

858944964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114075 (or 114073 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 57.

The square root of 858944964 is about 29307.7628624226. The cubic root of 858944964 is about 950.5795038615.

The spelling of 858944964 in words is "eight hundred fifty-eight million, nine hundred forty-four thousand, nine hundred sixty-four".