3965642 has 16 divisors (see below), whose sum is σ = 6345600. Its totient is φ = 1853280.

The previous prime is 3965639. The next prime is 3965653. The reversal of 3965642 is 2465693.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 2342 + ... + 3662.

It is an arithmetic number, because the mean of its divisors is an integer number (396600).

Almost surely, 2^3965642 is an apocalyptic number.

3965642 is a deficient number, since it is larger than the sum of its proper divisors (2379958).

3965642 is a wasteful number, since it uses less digits than its factorization.

3965642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421.

The product of its digits is 38880, while the sum is 35.

The square root of 3965642 is about 1991.3919754785. The cubic root of 3965642 is about 158.2842982659.

The spelling of 3965642 in words is "three million, nine hundred sixty-five thousand, six hundred forty-two".