864207964 has 24 divisors (see below), whose sum is σ = 1554591248. Its totient is φ = 420059520.

The previous prime is 864207931. The next prime is 864207973. The reversal of 864207964 is 469702468.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257779 + ... + 261109.

Almost surely, 2^864207964 is an apocalyptic number.

It is an amenable number.

864207964 is a deficient number, since it is larger than the sum of its proper divisors (690383284).

864207964 is a wasteful number, since it uses less digits than its factorization.

864207964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5125 (or 5123 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 864207964 is about 29397.4142400314. The cubic root of 864207964 is about 952.5170422432.

The spelling of 864207964 in words is "eight hundred sixty-four million, two hundred seven thousand, nine hundred sixty-four".