3944666 has 16 divisors (see below), whose sum is σ = 6795360. Its totient is φ = 1698480.

The previous prime is 3944627. The next prime is 3944669. The reversal of 3944666 is 6664493.

It is a happy number.

3944666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (3944669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4301 + ... + 5136.

It is an arithmetic number, because the mean of its divisors is an integer number (424710).

Almost surely, 2^3944666 is an apocalyptic number.

3944666 is a deficient number, since it is larger than the sum of its proper divisors (2850694).

3944666 is a wasteful number, since it uses less digits than its factorization.

3944666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9469.

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

The square root of 3944666 is about 1986.1183247732. The cubic root of 3944666 is about 158.0047266652.

The spelling of 3944666 in words is "three million, nine hundred forty-four thousand, six hundred sixty-six".