138296539 has 4 divisors (see below), whose sum is σ = 144309456. Its totient is φ = 132283624.

The previous prime is 138296527. The next prime is 138296551. The reversal of 138296539 is 935692831.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (138296527) and next prime (138296551).

It is a cyclic number.

It is not a de Polignac number, because 138296539 - 2⁵ = 138296507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138296579) 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, 3006424 + ... + 3006469.

It is an arithmetic number, because the mean of its divisors is an integer number (36077364).

Almost surely, 2^138296539 is an apocalyptic number.

138296539 is a deficient number, since it is larger than the sum of its proper divisors (6012917).

138296539 is an equidigital number, since it uses as much as digits as its factorization.

138296539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6012916.

The product of its digits is 349920, while the sum is 46.

The square root of 138296539 is about 11759.9548893693. The cubic root of 138296539 is about 517.1348076565.

The spelling of 138296539 in words is "one hundred thirty-eight million, two hundred ninety-six thousand, five hundred thirty-nine".