39924641369 has 2 divisors, whose sum is σ = 39924641370. Its totient is φ = 39924641368.

The previous prime is 39924641257. The next prime is 39924641371. The reversal of 39924641369 is 96314642993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39267385600 + 657255769 = 198160^2 + 25637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39924641369 is a prime.

It is a super-2 number, since 2×39924641369² (a number of 22 digits) contains 22 as substring.

Together with 39924641371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39924641399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19962320684 + 19962320685.

It is an arithmetic number, because the mean of its divisors is an integer number (19962320685).

Almost surely, 2^39924641369 is an apocalyptic number.

It is an amenable number.

39924641369 is a deficient number, since it is larger than the sum of its proper divisors (1).

39924641369 is an equidigital number, since it uses as much as digits as its factorization.

39924641369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7558272, while the sum is 56.

The spelling of 39924641369 in words is "thirty-nine billion, nine hundred twenty-four million, six hundred forty-one thousand, three hundred sixty-nine".