139316539 has 2 divisors, whose sum is σ = 139316540. Its totient is φ = 139316538.

The previous prime is 139316509. The next prime is 139316549. The reversal of 139316539 is 935613931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139316539 - 2⁹ = 139316027 is a prime.

It is not a weakly prime, because it can be changed into another prime (139316509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69658269 + 69658270.

It is an arithmetic number, because the mean of its divisors is an integer number (69658270).

Almost surely, 2^139316539 is an apocalyptic number.

139316539 is a deficient number, since it is larger than the sum of its proper divisors (1).

139316539 is an equidigital number, since it uses as much as digits as its factorization.

139316539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65610, while the sum is 40.

The square root of 139316539 is about 11803.2427324020. The cubic root of 139316539 is about 518.4030630531.

The spelling of 139316539 in words is "one hundred thirty-nine million, three hundred sixteen thousand, five hundred thirty-nine".