864538395 has 16 divisors (see below), whose sum is σ = 1580870400. Its totient is φ = 395217504.

The previous prime is 864538391. The next prime is 864538397. The reversal of 864538395 is 593835468.

It is a happy number.

It is not a de Polignac number, because 864538395 - 2² = 864538391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (864538391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4116745 + ... + 4116954.

It is an arithmetic number, because the mean of its divisors is an integer number (98804400).

Almost surely, 2^864538395 is an apocalyptic number.

864538395 is a deficient number, since it is larger than the sum of its proper divisors (716332005).

864538395 is a wasteful number, since it uses less digits than its factorization.

864538395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8233714.

The product of its digits is 3110400, while the sum is 51.

The square root of 864538395 is about 29403.0337720447. The cubic root of 864538395 is about 952.6384254699.

The spelling of 864538395 in words is "eight hundred sixty-four million, five hundred thirty-eight thousand, three hundred ninety-five".