864442931 has 8 divisors (see below), whose sum is σ = 950228928. Its totient is φ = 779857000.

The previous prime is 864442919. The next prime is 864442939. The reversal of 864442931 is 139244468.

864442931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 864442931 - 2¹⁸ = 864180787 is a prime.

It is a super-2 number, since 2×864442931² = 1494523161911741522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (864442939) 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, 298505 + ... + 301386.

It is an arithmetic number, because the mean of its divisors is an integer number (118778616).

Almost surely, 2^864442931 is an apocalyptic number.

864442931 is a deficient number, since it is larger than the sum of its proper divisors (85785997).

864442931 is a wasteful number, since it uses less digits than its factorization.

864442931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600033.

The product of its digits is 165888, while the sum is 41.

The square root of 864442931 is about 29401.4103573281. The cubic root of 864442931 is about 952.6033601206.

The spelling of 864442931 in words is "eight hundred sixty-four million, four hundred forty-two thousand, nine hundred thirty-one".