39976642696 has 8 divisors (see below), whose sum is σ = 74956205070. Its totient is φ = 19988321344.

The previous prime is 39976642679. The next prime is 39976642697. The reversal of 39976642696 is 69624667993.

It can be written as a sum of positive squares in only one way, i.e., 22444234596 + 17532408100 = 149814^2 + 132410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×39976642696² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39976642697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2498540161 + ... + 2498540176.

Almost surely, 2^39976642696 is an apocalyptic number.

It is an amenable number.

39976642696 is a deficient number, since it is larger than the sum of its proper divisors (34979562374).

39976642696 is a wasteful number, since it uses less digits than its factorization.

39976642696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4997080343 (or 4997080339 counting only the distinct ones).

The product of its digits is 158723712, while the sum is 67.

The spelling of 39976642696 in words is "thirty-nine billion, nine hundred seventy-six million, six hundred forty-two thousand, six hundred ninety-six".