3945879 has 12 divisors (see below), whose sum is σ = 6513936. Its totient is φ = 2254752.

The previous prime is 3945841. The next prime is 3945883. The reversal of 3945879 is 9785493.

It is not a de Polignac number, because 3945879 - 2⁹ = 3945367 is a prime.

It is a super-2 number, since 2×3945879² = 31139922165282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945079) 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 11 ways as a sum of consecutive naturals, for example, 31254 + ... + 31379.

It is an arithmetic number, because the mean of its divisors is an integer number (542828).

Almost surely, 2^3945879 is an apocalyptic number.

3945879 is a deficient number, since it is larger than the sum of its proper divisors (2568057).

3945879 is a wasteful number, since it uses less digits than its factorization.

3945879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62646 (or 62643 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 3945879 is about 1986.4236708215. The cubic root of 3945879 is about 158.0209206929.

The spelling of 3945879 in words is "three million, nine hundred forty-five thousand, eight hundred seventy-nine".