3964990 has 16 divisors (see below), whose sum is σ = 7162848. Its totient is φ = 1580256.

The previous prime is 3964973. The next prime is 3965021. The reversal of 3964990 is 994693.

It is a super-2 number, since 2×3964990² = 31442291400200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3199 + ... + 4261.

It is an arithmetic number, because the mean of its divisors is an integer number (447678).

Almost surely, 2^3964990 is an apocalyptic number.

3964990 is a deficient number, since it is larger than the sum of its proper divisors (3197858).

3964990 is a wasteful number, since it uses less digits than its factorization.

3964990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 3964990 is about 1991.2282641626. The cubic root of 3964990 is about 158.2756231663.

The spelling of 3964990 in words is "three million, nine hundred sixty-four thousand, nine hundred ninety".