39694743964 has 12 divisors (see below), whose sum is σ = 69763940064. Its totient is φ = 19762189664.

The previous prime is 39694743947. The next prime is 39694744013. The reversal of 39694743964 is 46934749693.

It is a junction number, because it is equal to n+sod(n) for n = 39694743896 and 39694743905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21294532 + ... + 21296395.

It is an arithmetic number, because the mean of its divisors is an integer number (5813661672).

Almost surely, 2^39694743964 is an apocalyptic number.

It is an amenable number.

39694743964 is a deficient number, since it is larger than the sum of its proper divisors (30069196100).

39694743964 is a wasteful number, since it uses less digits than its factorization.

39694743964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42591164 (or 42591162 counting only the distinct ones).

The product of its digits is 105815808, while the sum is 64.

The spelling of 39694743964 in words is "thirty-nine billion, six hundred ninety-four million, seven hundred forty-three thousand, nine hundred sixty-four".