3999931436 has 12 divisors (see below), whose sum is σ = 7000655928. Its totient is φ = 1999744032.

The previous prime is 3999931427. The next prime is 3999931447. The reversal of 3999931436 is 6341399993.

It is a happy number.

3999931436 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10841 + ... + 90096.

It is an arithmetic number, because the mean of its divisors is an integer number (583387994).

Almost surely, 2^3999931436 is an apocalyptic number.

It is an amenable number.

3999931436 is a deficient number, since it is larger than the sum of its proper divisors (3000724492).

3999931436 is a wasteful number, since it uses less digits than its factorization.

3999931436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110848 (or 110846 counting only the distinct ones).

The product of its digits is 4251528, while the sum is 56.

The square root of 3999931436 is about 63245.0111550310. The cubic root of 3999931436 is about 1587.3919820359.

The spelling of 3999931436 in words is "three billion, nine hundred ninety-nine million, nine hundred thirty-one thousand, four hundred thirty-six".