139254564 has 24 divisors (see below), whose sum is σ = 329042560. Its totient is φ = 45830304.

The previous prime is 139254541. The next prime is 139254571. The reversal of 139254564 is 465452931.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72499 + ... + 74394.

Almost surely, 2^139254564 is an apocalyptic number.

It is an amenable number.

139254564 is an abundant number, since it is smaller than the sum of its proper divisors (189787996).

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

139254564 is a wasteful number, since it uses less digits than its factorization.

139254564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146979 (or 146977 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 139254564 is about 11800.6171025078. The cubic root of 139254564 is about 518.3261810707.

The spelling of 139254564 in words is "one hundred thirty-nine million, two hundred fifty-four thousand, five hundred sixty-four".