864955494 has 24 divisors (see below), whose sum is σ = 2018230032. Its totient is φ = 266140080.

The previous prime is 864955493. The next prime is 864955501. The reversal of 864955494 is 494559468.

864955494 is a `hidden beast` number, since 8 + 6 + 4 + 95 + 549 + 4 = 666.

864955494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 864955494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864955493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1847962 + ... + 1848429.

It is an arithmetic number, because the mean of its divisors is an integer number (84092918).

Almost surely, 2^864955494 is an apocalyptic number.

864955494 is an abundant number, since it is smaller than the sum of its proper divisors (1153274538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864955494 is a wasteful number, since it uses less digits than its factorization.

864955494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696412 (or 3696409 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The square root of 864955494 is about 29410.1257052737. The cubic root of 864955494 is about 952.7916018755.

The spelling of 864955494 in words is "eight hundred sixty-four million, nine hundred fifty-five thousand, four hundred ninety-four".