139112812 has 12 divisors (see below), whose sum is σ = 244354320. Its totient is φ = 69297296.

The previous prime is 139112801. The next prime is 139112849. The reversal of 139112812 is 218211931.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63568 + ... + 65719.

It is an arithmetic number, because the mean of its divisors is an integer number (20362860).

Almost surely, 2^139112812 is an apocalyptic number.

It is an amenable number.

139112812 is a deficient number, since it is larger than the sum of its proper divisors (105241508).

139112812 is a wasteful number, since it uses less digits than its factorization.

139112812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129560 (or 129558 counting only the distinct ones).

The product of its digits is 864, while the sum is 28.

The square root of 139112812 is about 11794.6094466922. The cubic root of 139112812 is about 518.1502473579.

The spelling of 139112812 in words is "one hundred thirty-nine million, one hundred twelve thousand, eight hundred twelve".