864441492 has 24 divisors (see below), whose sum is σ = 2050097952. Its totient is φ = 283423200.

The previous prime is 864441481. The next prime is 864441493. The reversal of 864441492 is 294144468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864441493) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 589734 + ... + 591197.

It is an arithmetic number, because the mean of its divisors is an integer number (85420748).

Almost surely, 2^864441492 is an apocalyptic number.

It is an amenable number.

864441492 is an abundant number, since it is smaller than the sum of its proper divisors (1185656460).

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

864441492 is a wasteful number, since it uses less digits than its factorization.

864441492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180999 (or 1180997 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 864441492 is about 29401.3858857027. The cubic root of 864441492 is about 952.6028315347.

The spelling of 864441492 in words is "eight hundred sixty-four million, four hundred forty-one thousand, four hundred ninety-two".