3990172 has 12 divisors (see below), whose sum is σ = 7393680. Its totient is φ = 1877696.

The previous prime is 3990169. The next prime is 3990179. The reversal of 3990172 is 2710993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29272 + ... + 29407.

It is an arithmetic number, because the mean of its divisors is an integer number (616140).

Almost surely, 2^3990172 is an apocalyptic number.

It is an amenable number.

3990172 is a deficient number, since it is larger than the sum of its proper divisors (3403508).

3990172 is a wasteful number, since it uses less digits than its factorization.

3990172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58700 (or 58698 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 3990172 is about 1997.5414889308. The cubic root of 3990172 is about 158.6099904284.

The spelling of 3990172 in words is "three million, nine hundred ninety thousand, one hundred seventy-two".