139645896 has 64 divisors (see below), whose sum is σ = 395774400. Its totient is φ = 40704768.

The previous prime is 139645867. The next prime is 139645931. The reversal of 139645896 is 698546931.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5851 + ... + 17706.

It is an arithmetic number, because the mean of its divisors is an integer number (6183975).

Almost surely, 2^139645896 is an apocalyptic number.

It is an amenable number.

139645896 is an abundant number, since it is smaller than the sum of its proper divisors (256128504).

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

139645896 is a wasteful number, since it uses less digits than its factorization.

139645896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23598 (or 23594 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 139645896 is about 11817.1864671757. The cubic root of 139645896 is about 518.8112589195.

The spelling of 139645896 in words is "one hundred thirty-nine million, six hundred forty-five thousand, eight hundred ninety-six".