861359924 has 12 divisors (see below), whose sum is σ = 1556005248. Its totient is φ = 416787000.

The previous prime is 861359887. The next prime is 861359953. The reversal of 861359924 is 429953168.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3473102 + ... + 3473349.

It is an arithmetic number, because the mean of its divisors is an integer number (129667104).

Almost surely, 2^861359924 is an apocalyptic number.

It is an amenable number.

861359924 is a deficient number, since it is larger than the sum of its proper divisors (694645324).

861359924 is a wasteful number, since it uses less digits than its factorization.

861359924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6946486 (or 6946484 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 861359924 is about 29348.9339499751. The cubic root of 861359924 is about 951.4695350532.

The spelling of 861359924 in words is "eight hundred sixty-one million, three hundred fifty-nine thousand, nine hundred twenty-four".