864289136 has 20 divisors (see below), whose sum is σ = 1675092192. Its totient is φ = 432007296.

The previous prime is 864289007. The next prime is 864289141. The reversal of 864289136 is 631982468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59945 + ... + 72951.

Almost surely, 2^864289136 is an apocalyptic number.

It is an amenable number.

864289136 is a deficient number, since it is larger than the sum of its proper divisors (810803056).

864289136 is a wasteful number, since it uses less digits than its factorization.

864289136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17168 (or 17162 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 864289136 is about 29398.7948052297. The cubic root of 864289136 is about 952.5468634961.

The spelling of 864289136 in words is "eight hundred sixty-four million, two hundred eighty-nine thousand, one hundred thirty-six".