138032339 has 4 divisors (see below), whose sum is σ = 138100200. Its totient is φ = 137964480.

The previous prime is 138032309. The next prime is 138032351. The reversal of 138032339 is 933230831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 933230831 = 13 ⋅71786987.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138032339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138032309) by changing a digit.

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, 30782 + ... + 34979.

It is an arithmetic number, because the mean of its divisors is an integer number (34525050).

Almost surely, 2^138032339 is an apocalyptic number.

138032339 is a deficient number, since it is larger than the sum of its proper divisors (67861).

138032339 is an equidigital number, since it uses as much as digits as its factorization.

138032339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67860.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 138032339 is about 11748.7164830887. The cubic root of 138032339 is about 516.8052884143.

The spelling of 138032339 in words is "one hundred thirty-eight million, thirty-two thousand, three hundred thirty-nine".