138796239 has 8 divisors (see below), whose sum is σ = 185123200. Its totient is φ = 92500056.

The previous prime is 138796219. The next prime is 138796247. The reversal of 138796239 is 932697831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138796239 - 2¹⁷ = 138665167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138796219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6654 + ... + 17940.

It is an arithmetic number, because the mean of its divisors is an integer number (23140400).

Almost surely, 2^138796239 is an apocalyptic number.

138796239 is a deficient number, since it is larger than the sum of its proper divisors (46326961).

138796239 is a wasteful number, since it uses less digits than its factorization.

138796239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15389.

The product of its digits is 489888, while the sum is 48.

The square root of 138796239 is about 11781.1815621354. The cubic root of 138796239 is about 517.7569048120.

The spelling of 138796239 in words is "one hundred thirty-eight million, seven hundred ninety-six thousand, two hundred thirty-nine".