3998090 has 16 divisors (see below), whose sum is σ = 7509888. Its totient is φ = 1529616.

The previous prime is 3998089. The next prime is 3998107. The reversal of 3998090 is 908993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8462 + ... + 8921.

It is an arithmetic number, because the mean of its divisors is an integer number (469368).

Almost surely, 2^3998090 is an apocalyptic number.

3998090 is a deficient number, since it is larger than the sum of its proper divisors (3511798).

3998090 is a wasteful number, since it uses less digits than its factorization.

3998090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17413.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 3998090 is about 1999.5224429848. The cubic root of 3998090 is about 158.7148350408.

The spelling of 3998090 in words is "three million, nine hundred ninety-eight thousand, ninety".