863894992 has 20 divisors (see below), whose sum is σ = 1702167840. Its totient is φ = 424625888.

The previous prime is 863894987. The next prime is 863895023. The reversal of 863894992 is 299498368.

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, 456628 + ... + 458515.

It is an arithmetic number, because the mean of its divisors is an integer number (85108392).

Almost surely, 2^863894992 is an apocalyptic number.

It is an amenable number.

863894992 is a deficient number, since it is larger than the sum of its proper divisors (838272848).

863894992 is a wasteful number, since it uses less digits than its factorization.

863894992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915210 (or 915204 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 58.

The square root of 863894992 is about 29392.0906367683. The cubic root of 863894992 is about 952.4020440135.

The spelling of 863894992 in words is "eight hundred sixty-three million, eight hundred ninety-four thousand, nine hundred ninety-two".