3993903 has 12 divisors (see below), whose sum is σ = 5848960. Its totient is φ = 2625696.

The previous prime is 3993901. The next prime is 3993907. The reversal of 3993903 is 3093993.

It is not a de Polignac number, because 3993903 - 2¹ = 3993901 is a prime.

It is a super-2 number, since 2×3993903² = 31902522346818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2383 + ... + 3696.

Almost surely, 2^3993903 is an apocalyptic number.

3993903 is a deficient number, since it is larger than the sum of its proper divisors (1855057).

3993903 is a wasteful number, since it uses less digits than its factorization.

3993903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6158 (or 6155 counting only the distinct ones).

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

The square root of 3993903 is about 1998.4751687224. The cubic root of 3993903 is about 158.6594109818.

The spelling of 3993903 in words is "three million, nine hundred ninety-three thousand, nine hundred three".