139589717 has 2 divisors, whose sum is σ = 139589718. Its totient is φ = 139589716.

The previous prime is 139589699. The next prime is 139589719. The reversal of 139589717 is 717985931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73427761 + 66161956 = 8569^2 + 8134^2 .

It is a cyclic number.

It is not a de Polignac number, because 139589717 - 2¹⁴ = 139573333 is a prime.

Together with 139589719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139589719) 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 as a sum of consecutive naturals, namely, 69794858 + 69794859.

It is an arithmetic number, because the mean of its divisors is an integer number (69794859).

Almost surely, 2^139589717 is an apocalyptic number.

It is an amenable number.

139589717 is a deficient number, since it is larger than the sum of its proper divisors (1).

139589717 is an equidigital number, since it uses as much as digits as its factorization.

139589717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 50.

The square root of 139589717 is about 11814.8092240205. The cubic root of 139589717 is about 518.7416776717.

The spelling of 139589717 in words is "one hundred thirty-nine million, five hundred eighty-nine thousand, seven hundred seventeen".