709139931917 has 2 divisors, whose sum is σ = 709139931918. Its totient is φ = 709139931916.

The previous prime is 709139931911. The next prime is 709139931953. The reversal of 709139931917 is 719139931907.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 591344082121 + 117795849796 = 768989^2 + 343214^2 .

It is a cyclic number.

It is not a de Polignac number, because 709139931917 - 2⁶ = 709139931853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (709139931911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354569965958 + 354569965959.

It is an arithmetic number, because the mean of its divisors is an integer number (354569965959).

Almost surely, 2^709139931917 is an apocalyptic number.

It is an amenable number.

709139931917 is a deficient number, since it is larger than the sum of its proper divisors (1).

709139931917 is an equidigital number, since it uses as much as digits as its factorization.

709139931917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2893401, while the sum is 59.

The spelling of 709139931917 in words is "seven hundred nine billion, one hundred thirty-nine million, nine hundred thirty-one thousand, nine hundred seventeen".