139231264 has 12 divisors (see below), whose sum is σ = 274111614. Its totient is φ = 69615616.

The previous prime is 139231237. The next prime is 139231271. The reversal of 139231264 is 462132931.

It can be written as a sum of positive squares in only one way, i.e., 75550864 + 63680400 = 8692^2 + 7980^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2175457 + ... + 2175520.

Almost surely, 2^139231264 is an apocalyptic number.

It is an amenable number.

139231264 is a deficient number, since it is larger than the sum of its proper divisors (134880350).

139231264 is an equidigital number, since it uses as much as digits as its factorization.

139231264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350987 (or 4350979 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 139231264 is about 11799.6298247021. The cubic root of 139231264 is about 518.2972707708.

The spelling of 139231264 in words is "one hundred thirty-nine million, two hundred thirty-one thousand, two hundred sixty-four".