3979857 has 8 divisors (see below), whose sum is σ = 6064576. Its totient is φ = 2274192.

The previous prime is 3979849. The next prime is 3979861. The reversal of 3979857 is 7589793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3979857 - 2³ = 3979849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3979837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94738 + ... + 94779.

It is an arithmetic number, because the mean of its divisors is an integer number (758072).

Almost surely, 2^3979857 is an apocalyptic number.

It is an amenable number.

3979857 is a deficient number, since it is larger than the sum of its proper divisors (2084719).

3979857 is a wasteful number, since it uses less digits than its factorization.

3979857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189527.

The product of its digits is 476280, while the sum is 48.

The square root of 3979857 is about 1994.9578942925. The cubic root of 3979857 is about 158.4731981736.

The spelling of 3979857 in words is "three million, nine hundred seventy-nine thousand, eight hundred fifty-seven".