864501044 has 12 divisors (see below), whose sum is σ = 1650411168. Its totient is φ = 392955000.

The previous prime is 864501037. The next prime is 864501047. The reversal of 864501044 is 440105468.

It is a self number, because there is not a number n which added to its sum of digits gives 864501044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864501047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9823832 + ... + 9823919.

It is an arithmetic number, because the mean of its divisors is an integer number (137534264).

Almost surely, 2^864501044 is an apocalyptic number.

It is an amenable number.

864501044 is a deficient number, since it is larger than the sum of its proper divisors (785910124).

864501044 is a wasteful number, since it uses less digits than its factorization.

864501044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19647766 (or 19647764 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 864501044 is about 29402.3986096373. The cubic root of 864501044 is about 952.6247061986.

The spelling of 864501044 in words is "eight hundred sixty-four million, five hundred one thousand, forty-four".