139517933 has 2 divisors, whose sum is σ = 139517934. Its totient is φ = 139517932.

The previous prime is 139517909. The next prime is 139517941. The reversal of 139517933 is 339715931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82937449 + 56580484 = 9107^2 + 7522^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139517933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139517953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69758966 + 69758967.

It is an arithmetic number, because the mean of its divisors is an integer number (69758967).

Almost surely, 2^139517933 is an apocalyptic number.

It is an amenable number.

139517933 is a deficient number, since it is larger than the sum of its proper divisors (1).

139517933 is an equidigital number, since it uses as much as digits as its factorization.

139517933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76545, while the sum is 41.

The square root of 139517933 is about 11811.7709510471. The cubic root of 139517933 is about 518.6527414704.

The spelling of 139517933 in words is "one hundred thirty-nine million, five hundred seventeen thousand, nine hundred thirty-three".