3990933 has 6 divisors (see below), whose sum is σ = 5764694. Its totient is φ = 2660616.

The previous prime is 3990929. The next prime is 3990967. The reversal of 3990933 is 3390993.

It can be written as a sum of positive squares in only one way, i.e., 3175524 + 815409 = 1782^2 + 903^2 .

It is not a de Polignac number, because 3990933 - 2² = 3990929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990913) 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 5 ways as a sum of consecutive naturals, for example, 221710 + ... + 221727.

Almost surely, 2^3990933 is an apocalyptic number.

It is an amenable number.

3990933 is a deficient number, since it is larger than the sum of its proper divisors (1773761).

3990933 is a wasteful number, since it uses less digits than its factorization.

3990933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443443 (or 443440 counting only the distinct ones).

The product of its (nonzero) digits is 19683, while the sum is 36.

The square root of 3990933 is about 1997.7319640032. The cubic root of 3990933 is about 158.6200730790.

The spelling of 3990933 in words is "three million, nine hundred ninety thousand, nine hundred thirty-three".