864444160 has 36 divisors (see below), whose sum is σ = 2070616968. Its totient is φ = 345777152.

The previous prime is 864444131. The next prime is 864444193. The reversal of 864444160 is 61444468.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336394 + ... + 338953.

It is an arithmetic number, because the mean of its divisors is an integer number (57517138).

Almost surely, 2^864444160 is an apocalyptic number.

864444160 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

864444160 is an abundant number, since it is smaller than the sum of its proper divisors (1206172808).

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

864444160 is an equidigital number, since it uses as much as digits as its factorization.

864444160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675368 (or 675354 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 864444160 is about 29401.4312576786. The cubic root of 864444160 is about 952.6038115670.

The spelling of 864444160 in words is "eight hundred sixty-four million, four hundred forty-four thousand, one hundred sixty".