39942994 has 16 divisors (see below), whose sum is σ = 73741248. Its totient is φ = 15801552.

The previous prime is 39942971. The next prime is 39943021. The reversal of 39942994 is 49924993.

39942994 = 617² + 618² + ... + 707².

39942994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 109552 + ... + 109915.

It is an arithmetic number, because the mean of its divisors is an integer number (4608828).

Almost surely, 2^39942994 is an apocalyptic number.

39942994 is a deficient number, since it is larger than the sum of its proper divisors (33798254).

39942994 is a wasteful number, since it uses less digits than its factorization.

39942994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219489.

The product of its digits is 629856, while the sum is 49.

The square root of 39942994 is about 6320.0469934962. The cubic root of 39942994 is about 341.8326472806.

The spelling of 39942994 in words is "thirty-nine million, nine hundred forty-two thousand, nine hundred ninety-four".