3990189 has 16 divisors (see below), whose sum is σ = 6438528. Its totient is φ = 2145792.

The previous prime is 3990187. The next prime is 3990241. The reversal of 3990189 is 9810993.

It is not a de Polignac number, because 3990189 - 2¹ = 3990187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990187) 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 15 ways as a sum of consecutive naturals, for example, 5232 + ... + 5945.

It is an arithmetic number, because the mean of its divisors is an integer number (402408).

Almost surely, 2^3990189 is an apocalyptic number.

It is an amenable number.

3990189 is a deficient number, since it is larger than the sum of its proper divisors (2448339).

3990189 is a wasteful number, since it uses less digits than its factorization.

3990189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11204.

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

The square root of 3990189 is about 1997.5457441571. The cubic root of 3990189 is about 158.6102156790.

The spelling of 3990189 in words is "three million, nine hundred ninety thousand, one hundred eighty-nine".