3990495 has 16 divisors (see below), whose sum is σ = 6760800. Its totient is φ = 2002944.

The previous prime is 3990473. The next prime is 3990509. The reversal of 3990495 is 5940993.

It is a happy number.

It is not a de Polignac number, because 3990495 - 2⁵ = 3990463 is a prime.

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, 7570 + ... + 8079.

It is an arithmetic number, because the mean of its divisors is an integer number (422550).

Almost surely, 2^3990495 is an apocalyptic number.

3990495 is a deficient number, since it is larger than the sum of its proper divisors (2770305).

3990495 is a wasteful number, since it uses less digits than its factorization.

3990495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15674.

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 3990495 is about 1997.6223366793. The cubic root of 3990495 is about 158.6142700806.

The spelling of 3990495 in words is "three million, nine hundred ninety thousand, four hundred ninety-five".