3964641 has 8 divisors (see below), whose sum is σ = 5317440. Its totient is φ = 2627472.

The previous prime is 3964633. The next prime is 3964651. The reversal of 3964641 is 1464693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3964641 - 2³ = 3964633 is a prime.

3964641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3964651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3301 + ... + 4338.

It is an arithmetic number, because the mean of its divisors is an integer number (664680).

Almost surely, 2^3964641 is an apocalyptic number.

It is an amenable number.

3964641 is a deficient number, since it is larger than the sum of its proper divisors (1352799).

3964641 is a wasteful number, since it uses less digits than its factorization.

3964641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7815.

The product of its digits is 15552, while the sum is 33.

The square root of 3964641 is about 1991.1406278814. The cubic root of 3964641 is about 158.2709792022.

The spelling of 3964641 in words is "three million, nine hundred sixty-four thousand, six hundred forty-one".