39902668 has 12 divisors (see below), whose sum is σ = 75201280. Its totient is φ = 18416592.

The previous prime is 39902617. The next prime is 39902669. The reversal of 39902668 is 86620993.

39902668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (39902669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383628 + ... + 383731.

Almost surely, 2^39902668 is an apocalyptic number.

It is an amenable number.

39902668 is a deficient number, since it is larger than the sum of its proper divisors (35298612).

39902668 is a wasteful number, since it uses less digits than its factorization.

39902668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767376 (or 767374 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 39902668 is about 6316.8558634815. The cubic root of 39902668 is about 341.7175717397.

The spelling of 39902668 in words is "thirty-nine million, nine hundred two thousand, six hundred sixty-eight".