39968156 has 24 divisors (see below), whose sum is σ = 75786480. Its totient is φ = 18369792.

The previous prime is 39968141. The next prime is 39968161. The reversal of 39968156 is 65186993.

It is a self number, because there is not a number n which added to its sum of digits gives 39968156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3911 + ... + 9758.

It is an arithmetic number, because the mean of its divisors is an integer number (3157770).

Almost surely, 2^39968156 is an apocalyptic number.

It is an amenable number.

39968156 is a deficient number, since it is larger than the sum of its proper divisors (35818324).

39968156 is a wasteful number, since it uses less digits than its factorization.

39968156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13733 (or 13731 counting only the distinct ones).

The product of its digits is 349920, while the sum is 47.

The square root of 39968156 is about 6322.0373298487. The cubic root of 39968156 is about 341.9044111182.

The spelling of 39968156 in words is "thirty-nine million, nine hundred sixty-eight thousand, one hundred fifty-six".