39924642937 has 2 divisors, whose sum is σ = 39924642938. Its totient is φ = 39924642936.

The previous prime is 39924642907. The next prime is 39924642997. The reversal of 39924642937 is 73924642993.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39700961001 + 223681936 = 199251^2 + 14956^2 .

It is a cyclic number.

It is not a de Polignac number, because 39924642937 - 2¹⁵ = 39924610169 is a prime.

It is a super-2 number, since 2×39924642937² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39924642907) 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, 19962321468 + 19962321469.

It is an arithmetic number, because the mean of its divisors is an integer number (19962321469).

Almost surely, 2^39924642937 is an apocalyptic number.

It is an amenable number.

39924642937 is a deficient number, since it is larger than the sum of its proper divisors (1).

39924642937 is an equidigital number, since it uses as much as digits as its factorization.

39924642937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17635968, while the sum is 58.

The spelling of 39924642937 in words is "thirty-nine billion, nine hundred twenty-four million, six hundred forty-two thousand, nine hundred thirty-seven".