139372864 has 28 divisors (see below), whose sum is σ = 280704544. Its totient is φ = 68644224.

The previous prime is 139372859. The next prime is 139372867. The reversal of 139372864 is 468273931.

It is a self number, because there is not a number n which added to its sum of digits gives 139372864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139372867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11964 + ... + 20539.

Almost surely, 2^139372864 is an apocalyptic number.

It is an amenable number.

139372864 is an abundant number, since it is smaller than the sum of its proper divisors (141331680).

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

139372864 is an equidigital number, since it uses as much as digits as its factorization.

139372864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32582 (or 32572 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 139372864 is about 11805.6284881407. The cubic root of 139372864 is about 518.4729162536.

The spelling of 139372864 in words is "one hundred thirty-nine million, three hundred seventy-two thousand, eight hundred sixty-four".