139272238 has 16 divisors (see below), whose sum is σ = 239889024. Its totient is φ = 59403960.

The previous prime is 139272229. The next prime is 139272241. The reversal of 139272238 is 832272931.

It is a junction number, because it is equal to n+sod(n) for n = 139272197 and 139272206.

It is a congruent number.

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, 20620 + ... + 26527.

It is an arithmetic number, because the mean of its divisors is an integer number (14993064).

Almost surely, 2^139272238 is an apocalyptic number.

139272238 is a deficient number, since it is larger than the sum of its proper divisors (100616786).

139272238 is a wasteful number, since it uses less digits than its factorization.

139272238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47367.

The product of its digits is 36288, while the sum is 37.

The square root of 139272238 is about 11801.3659378904. The cubic root of 139272238 is about 518.3481085612.

The spelling of 139272238 in words is "one hundred thirty-nine million, two hundred seventy-two thousand, two hundred thirty-eight".