3959916 has 12 divisors (see below), whose sum is σ = 9239832. Its totient is φ = 1319968.

The previous prime is 3959911. The next prime is 3959947. The reversal of 3959916 is 6199593.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3959911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164985 + ... + 165008.

It is an arithmetic number, because the mean of its divisors is an integer number (769986).

Almost surely, 2^3959916 is an apocalyptic number.

It is an amenable number.

3959916 is an abundant number, since it is smaller than the sum of its proper divisors (5279916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3959916 is a wasteful number, since it uses less digits than its factorization.

3959916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330000 (or 329998 counting only the distinct ones).

The product of its digits is 65610, while the sum is 42.

The square root of 3959916 is about 1989.9537683072. The cubic root of 3959916 is about 158.2080792105.

The spelling of 3959916 in words is "three million, nine hundred fifty-nine thousand, nine hundred sixteen".