139275239 has 4 divisors (see below), whose sum is σ = 139817424. Its totient is φ = 138733056.

The previous prime is 139275229. The next prime is 139275293. The reversal of 139275239 is 932572931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139275239 - 2⁸ = 139274983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139275196 and 139275205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139275209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270707 + ... + 271220.

It is an arithmetic number, because the mean of its divisors is an integer number (34954356).

Almost surely, 2^139275239 is an apocalyptic number.

139275239 is a deficient number, since it is larger than the sum of its proper divisors (542185).

139275239 is an equidigital number, since it uses as much as digits as its factorization.

139275239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542184.

The product of its digits is 102060, while the sum is 41.

The square root of 139275239 is about 11801.4930835043. The cubic root of 139275239 is about 518.3518316088.

The spelling of 139275239 in words is "one hundred thirty-nine million, two hundred seventy-five thousand, two hundred thirty-nine".