139926959 has 2 divisors, whose sum is σ = 139926960. Its totient is φ = 139926958.

The previous prime is 139926947. The next prime is 139926967. The reversal of 139926959 is 959629931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139926959 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139926959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139926929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69963479 + 69963480.

It is an arithmetic number, because the mean of its divisors is an integer number (69963480).

Almost surely, 2^139926959 is an apocalyptic number.

139926959 is a deficient number, since it is larger than the sum of its proper divisors (1).

139926959 is an equidigital number, since it uses as much as digits as its factorization.

139926959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1180980, while the sum is 53.

The square root of 139926959 is about 11829.0726179190. The cubic root of 139926959 is about 519.1590932952.

The spelling of 139926959 in words is "one hundred thirty-nine million, nine hundred twenty-six thousand, nine hundred fifty-nine".