3964646 has 16 divisors (see below), whose sum is σ = 6822144. Its totient is φ = 1692744.

The previous prime is 3964633. The next prime is 3964651. The reversal of 3964646 is 6464693.

It is a happy number.

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, 6761 + ... + 7323.

It is an arithmetic number, because the mean of its divisors is an integer number (426384).

Almost surely, 2^3964646 is an apocalyptic number.

3964646 is a deficient number, since it is larger than the sum of its proper divisors (2857498).

3964646 is a wasteful number, since it uses less digits than its factorization.

3964646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075.

The product of its digits is 93312, while the sum is 38.

The square root of 3964646 is about 1991.1418834428. The cubic root of 3964646 is about 158.2710457366.

The spelling of 3964646 in words is "three million, nine hundred sixty-four thousand, six hundred forty-six".