3944879 has 4 divisors (see below), whose sum is σ = 3951384. Its totient is φ = 3938376.

The previous prime is 3944873. The next prime is 3944881. The reversal of 3944879 is 9784493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3944879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944873) by changing a digit.

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, 2237 + ... + 3590.

It is an arithmetic number, because the mean of its divisors is an integer number (987846).

Almost surely, 2^3944879 is an apocalyptic number.

3944879 is a deficient number, since it is larger than the sum of its proper divisors (6505).

3944879 is an equidigital number, since it uses as much as digits as its factorization.

3944879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6504.

The product of its digits is 217728, while the sum is 44.

The square root of 3944879 is about 1986.1719462322. The cubic root of 3944879 is about 158.0075705394.

The spelling of 3944879 in words is "three million, nine hundred forty-four thousand, eight hundred seventy-nine".