39407967917 has 2 divisors, whose sum is σ = 39407967918. Its totient is φ = 39407967916.

The previous prime is 39407967829. The next prime is 39407967943. The reversal of 39407967917 is 71976970493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37220441476 + 2187526441 = 192926^2 + 46771^2 .

It is a cyclic number.

It is not a de Polignac number, because 39407967917 - 2⁸ = 39407967661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39407967917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39407967997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19703983958 + 19703983959.

It is an arithmetic number, because the mean of its divisors is an integer number (19703983959).

Almost surely, 2^39407967917 is an apocalyptic number.

It is an amenable number.

39407967917 is a deficient number, since it is larger than the sum of its proper divisors (1).

39407967917 is an equidigital number, since it uses as much as digits as its factorization.

39407967917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18003384, while the sum is 62.

The spelling of 39407967917 in words is "thirty-nine billion, four hundred seven million, nine hundred sixty-seven thousand, nine hundred seventeen".