39968692 has 6 divisors (see below), whose sum is σ = 69945218. Its totient is φ = 19984344.

The previous prime is 39968689. The next prime is 39968701. The reversal of 39968692 is 29686993.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 38613796 + 1354896 = 6214^2 + 1164^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996083 + ... + 4996090.

Almost surely, 2^39968692 is an apocalyptic number.

It is an amenable number.

39968692 is a deficient number, since it is larger than the sum of its proper divisors (29976526).

39968692 is a wasteful number, since it uses less digits than its factorization.

39968692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9992177 (or 9992175 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 52.

The square root of 39968692 is about 6322.0797211044. The cubic root of 39968692 is about 341.9059395011.

The spelling of 39968692 in words is "thirty-nine million, nine hundred sixty-eight thousand, six hundred ninety-two".