139656712 has 32 divisors (see below), whose sum is σ = 282844800. Its totient is φ = 64263744.

The previous prime is 139656709. The next prime is 139656757. The reversal of 139656712 is 217656931.

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, 36339 + ... + 39997.

It is an arithmetic number, because the mean of its divisors is an integer number (8838900).

Almost surely, 2^139656712 is an apocalyptic number.

It is an amenable number.

139656712 is an abundant number, since it is smaller than the sum of its proper divisors (143188088).

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

139656712 is a wasteful number, since it uses less digits than its factorization.

139656712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4045 (or 4041 counting only the distinct ones).

The product of its digits is 68040, while the sum is 40.

The square root of 139656712 is about 11817.6440968579. The cubic root of 139656712 is about 518.8246530777.

The spelling of 139656712 in words is "one hundred thirty-nine million, six hundred fifty-six thousand, seven hundred twelve".