139388132 has 12 divisors (see below), whose sum is σ = 262693116. Its totient is φ = 64332960.

The previous prime is 139388129. The next prime is 139388141. The reversal of 139388132 is 231883931.

139388132 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 77545636 + 61842496 = 8806^2 + 7864^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340219 + ... + 1340322.

It is an arithmetic number, because the mean of its divisors is an integer number (21891093).

Almost surely, 2^139388132 is an apocalyptic number.

It is an amenable number.

139388132 is a deficient number, since it is larger than the sum of its proper divisors (123304984).

139388132 is a wasteful number, since it uses less digits than its factorization.

139388132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680558 (or 2680556 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 139388132 is about 11806.2751111432. The cubic root of 139388132 is about 518.4918480963.

The spelling of 139388132 in words is "one hundred thirty-nine million, three hundred eighty-eight thousand, one hundred thirty-two".