3959990 has 16 divisors (see below), whose sum is σ = 7151760. Its totient is φ = 1578720.

The previous prime is 3959983. The next prime is 3960007. The reversal of 3959990 is 999593.

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, 4181 + ... + 5039.

It is an arithmetic number, because the mean of its divisors is an integer number (446985).

Almost surely, 2^3959990 is an apocalyptic number.

3959990 is a deficient number, since it is larger than the sum of its proper divisors (3191770).

3959990 is a wasteful number, since it uses less digits than its factorization.

3959990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327.

The product of its (nonzero) digits is 98415, while the sum is 44.

The square root of 3959990 is about 1989.9723616171. The cubic root of 3959990 is about 158.2090646965.

The spelling of 3959990 in words is "three million, nine hundred fifty-nine thousand, nine hundred ninety".