39807916 has 12 divisors (see below), whose sum is σ = 70704088. Its totient is φ = 19606752.

The previous prime is 39807913. The next prime is 39807961. The reversal of 39807916 is 61970893.

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 (39807913) 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, 74001 + ... + 74536.

Almost surely, 2^39807916 is an apocalyptic number.

It is an amenable number.

39807916 is a deficient number, since it is larger than the sum of its proper divisors (30896172).

39807916 is a wasteful number, since it uses less digits than its factorization.

39807916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148608 (or 148606 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 39807916 is about 6309.3514722196. The cubic root of 39807916 is about 341.4468790166.

The spelling of 39807916 in words is "thirty-nine million, eight hundred seven thousand, nine hundred sixteen".