39707917129 has 2 divisors, whose sum is σ = 39707917130. Its totient is φ = 39707917128.

The previous prime is 39707917097. The next prime is 39707917141. The reversal of 39707917129 is 92171970793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20207191104 + 19500726025 = 142152^2 + 139645^2 .

It is a cyclic number.

It is not a de Polignac number, because 39707917129 - 2⁵ = 39707917097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39707917129.

It is not a weakly prime, because it can be changed into another prime (39707917159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19853958564 + 19853958565.

It is an arithmetic number, because the mean of its divisors is an integer number (19853958565).

Almost surely, 2^39707917129 is an apocalyptic number.

It is an amenable number.

39707917129 is a deficient number, since it is larger than the sum of its proper divisors (1).

39707917129 is an equidigital number, since it uses as much as digits as its factorization.

39707917129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500282, while the sum is 55.

The spelling of 39707917129 in words is "thirty-nine billion, seven hundred seven million, nine hundred seventeen thousand, one hundred twenty-nine".