3953644 has 12 divisors (see below), whose sum is σ = 6980904. Its totient is φ = 1959104.

The previous prime is 3953629. The next prime is 3953669. The reversal of 3953644 is 4463593.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3922 + ... + 4825.

It is an arithmetic number, because the mean of its divisors is an integer number (581742).

Almost surely, 2^3953644 is an apocalyptic number.

It is an amenable number.

3953644 is a deficient number, since it is larger than the sum of its proper divisors (3027260).

3953644 is a wasteful number, since it uses less digits than its factorization.

3953644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8864 (or 8862 counting only the distinct ones).

The product of its digits is 38880, while the sum is 34.

The square root of 3953644 is about 1988.3772277915. The cubic root of 3953644 is about 158.1245079583.

The spelling of 3953644 in words is "three million, nine hundred fifty-three thousand, six hundred forty-four".