39942874 has 16 divisors (see below), whose sum is σ = 61297920. Its totient is φ = 19515600.

The previous prime is 39942871. The next prime is 39942887. The reversal of 39942874 is 47824993.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (39942871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14707 + ... + 17209.

It is an arithmetic number, because the mean of its divisors is an integer number (3831120).

Almost surely, 2^39942874 is an apocalyptic number.

39942874 is a deficient number, since it is larger than the sum of its proper divisors (21355046).

39942874 is a wasteful number, since it uses less digits than its factorization.

39942874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685.

The product of its digits is 435456, while the sum is 46.

The square root of 39942874 is about 6320.0374998887. The cubic root of 39942874 is about 341.8323049597.

The spelling of 39942874 in words is "thirty-nine million, nine hundred forty-two thousand, eight hundred seventy-four".