39979686626 has 8 divisors (see below), whose sum is σ = 65421305424. Its totient is φ = 18172584820.

The previous prime is 39979686619. The next prime is 39979686629. The reversal of 39979686626 is 62668697993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 39979686626.

It is not an unprimeable number, because it can be changed into a prime (39979686629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 908629220 + ... + 908629263.

It is an arithmetic number, because the mean of its divisors is an integer number (8177663178).

Almost surely, 2^39979686626 is an apocalyptic number.

39979686626 is a deficient number, since it is larger than the sum of its proper divisors (25441618798).

39979686626 is a wasteful number, since it uses less digits than its factorization.

39979686626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817258496.

The product of its digits is 317447424, while the sum is 71.

The spelling of 39979686626 in words is "thirty-nine billion, nine hundred seventy-nine million, six hundred eighty-six thousand, six hundred twenty-six".