39999974 has 16 divisors (see below), whose sum is σ = 69972000. Its totient is φ = 17142552.

The previous prime is 39999943. The next prime is 39999979. The reversal of 39999974 is 47999993.

39999974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39999979) 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 7 ways as a sum of consecutive naturals, for example, 28469 + ... + 29840.

It is an arithmetic number, because the mean of its divisors is an integer number (4373250).

Almost surely, 2^39999974 is an apocalyptic number.

39999974 is a deficient number, since it is larger than the sum of its proper divisors (29972026).

39999974 is an equidigital number, since it uses as much as digits as its factorization.

39999974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58332 (or 58318 counting only the distinct ones).

The product of its digits is 4960116, while the sum is 59.

The square root of 39999974 is about 6324.5532648559. The cubic root of 39999974 is about 341.9951152364.

The spelling of 39999974 in words is "thirty-nine million, nine hundred ninety-nine thousand, nine hundred seventy-four".