139607717 has 2 divisors, whose sum is σ = 139607718. Its totient is φ = 139607716.

The previous prime is 139607669. The next prime is 139607729. The reversal of 139607717 is 717706931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139452481 + 155236 = 11809^2 + 394^2 .

It is a cyclic number.

It is not a de Polignac number, because 139607717 - 2¹⁰ = 139606693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139607917) 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, 69803858 + 69803859.

It is an arithmetic number, because the mean of its divisors is an integer number (69803859).

Almost surely, 2^139607717 is an apocalyptic number.

It is an amenable number.

139607717 is a deficient number, since it is larger than the sum of its proper divisors (1).

139607717 is an equidigital number, since it uses as much as digits as its factorization.

139607717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55566, while the sum is 41.

The square root of 139607717 is about 11815.5709553115. The cubic root of 139607717 is about 518.7639738433.

The spelling of 139607717 in words is "one hundred thirty-nine million, six hundred seven thousand, seven hundred seventeen".