864533392 has 10 divisors (see below), whose sum is σ = 1675033478. Its totient is φ = 432266688.

The previous prime is 864533387. The next prime is 864533393. The reversal of 864533392 is 293335468.

It can be written as a sum of positive squares in only one way, i.e., 714813696 + 149719696 = 26736^2 + 12236^2 .

It is not an unprimeable number, because it can be changed into a prime (864533393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27016653 + ... + 27016684.

Almost surely, 2^864533392 is an apocalyptic number.

It is an amenable number.

864533392 is a deficient number, since it is larger than the sum of its proper divisors (810500086).

864533392 is a wasteful number, since it uses less digits than its factorization.

864533392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54033345 (or 54033339 counting only the distinct ones).

The product of its digits is 466560, while the sum is 43.

The square root of 864533392 is about 29402.9486956666. The cubic root of 864533392 is about 952.6365878575.

The spelling of 864533392 in words is "eight hundred sixty-four million, five hundred thirty-three thousand, three hundred ninety-two".