139231338 has 32 divisors (see below), whose sum is σ = 285465600. Its totient is φ = 45258096.

The previous prime is 139231307. The next prime is 139231357. The reversal of 139231338 is 833132931.

It is a junction number, because it is equal to n+sod(n) for n = 139231299 and 139231308.

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, 37573 + ... + 41111.

It is an arithmetic number, because the mean of its divisors is an integer number (8920800).

Almost surely, 2^139231338 is an apocalyptic number.

139231338 is an abundant number, since it is smaller than the sum of its proper divisors (146234262).

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

139231338 is a wasteful number, since it uses less digits than its factorization.

139231338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706.

The product of its digits is 11664, while the sum is 33.

The square root of 139231338 is about 11799.6329603933. The cubic root of 139231338 is about 518.2973625940.

The spelling of 139231338 in words is "one hundred thirty-nine million, two hundred thirty-one thousand, three hundred thirty-eight".