3990942718 has 32 divisors (see below), whose sum is σ = 6977124864. Its totient is φ = 1676586912.

The previous prime is 3990942713. The next prime is 3990942721. The reversal of 3990942718 is 8172490993.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990942713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1190721 + ... + 1194067.

It is an arithmetic number, because the mean of its divisors is an integer number (218035152).

Almost surely, 2^3990942718 is an apocalyptic number.

3990942718 is a deficient number, since it is larger than the sum of its proper divisors (2986182146).

3990942718 is a wasteful number, since it uses less digits than its factorization.

3990942718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 3990942718 is about 63173.9085224272. The cubic root of 3990942718 is about 1586.2020182655.

The spelling of 3990942718 in words is "three billion, nine hundred ninety million, nine hundred forty-two thousand, seven hundred eighteen".