39907970745 has 48 divisors (see below), whose sum is σ = 66909960576. Its totient is φ = 20307033600.

The previous prime is 39907970737. The next prime is 39907970759. The reversal of 39907970745 is 54707970993.

It is a happy number.

It is not a de Polignac number, because 39907970745 - 2³ = 39907970737 is a prime.

It is a super-2 number, since 2×39907970745² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 in 47 ways as a sum of consecutive naturals, for example, 1003969 + ... + 1042961.

It is an arithmetic number, because the mean of its divisors is an integer number (1393957512).

Almost surely, 2^39907970745 is an apocalyptic number.

It is an amenable number.

39907970745 is a deficient number, since it is larger than the sum of its proper divisors (27001989831).

39907970745 is a wasteful number, since it uses less digits than its factorization.

39907970745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39134 (or 39103 counting only the distinct ones).

The product of its (nonzero) digits is 15002820, while the sum is 60.

The spelling of 39907970745 in words is "thirty-nine billion, nine hundred seven million, nine hundred seventy thousand, seven hundred forty-five".