3990198 has 16 divisors (see below), whose sum is σ = 8004096. Its totient is φ = 1326120.

The previous prime is 3990187. The next prime is 3990241. The reversal of 3990198 is 8910993.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1815 + ... + 3357.

It is an arithmetic number, because the mean of its divisors is an integer number (500256).

Almost surely, 2^3990198 is an apocalyptic number.

3990198 is an abundant number, since it is smaller than the sum of its proper divisors (4013898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3990198 is a wasteful number, since it uses less digits than its factorization.

3990198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 3990198 is about 1997.5479969202. The cubic root of 3990198 is about 158.6103349291.

The spelling of 3990198 in words is "three million, nine hundred ninety thousand, one hundred ninety-eight".