3979870 has 32 divisors (see below), whose sum is σ = 7783776. Its totient is φ = 1459200.

The previous prime is 3979861. The next prime is 3979883. The reversal of 3979870 is 789793.

It is a super-3 number, since 3×3979870³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6685 + ... + 7255.

It is an arithmetic number, because the mean of its divisors is an integer number (243243).

Almost surely, 2^3979870 is an apocalyptic number.

3979870 is a deficient number, since it is larger than the sum of its proper divisors (3803906).

3979870 is a wasteful number, since it uses less digits than its factorization.

3979870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 3979870 is about 1994.9611525040. The cubic root of 3979870 is about 158.4733707216.

The spelling of 3979870 in words is "three million, nine hundred seventy-nine thousand, eight hundred seventy".