3990903 has 24 divisors (see below), whose sum is σ = 6558192. Its totient is φ = 2145024.

The previous prime is 3990901. The next prime is 3990907. The reversal of 3990903 is 3090993.

It is not a de Polignac number, because 3990903 - 2¹ = 3990901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1701 + ... + 3297.

It is an arithmetic number, because the mean of its divisors is an integer number (273258).

Almost surely, 2^3990903 is an apocalyptic number.

3990903 is a deficient number, since it is larger than the sum of its proper divisors (2567289).

3990903 is a wasteful number, since it uses less digits than its factorization.

3990903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631 (or 1624 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 33.

The square root of 3990903 is about 1997.7244554743. The cubic root of 3990903 is about 158.6196756269.

The spelling of 3990903 in words is "three million, nine hundred ninety thousand, nine hundred three".