3993503 has 4 divisors (see below), whose sum is σ = 4131240. Its totient is φ = 3855768.

The previous prime is 3993481. The next prime is 3993511. The reversal of 3993503 is 3053993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3993503 - 2⁸ = 3993247 is a prime.

It is a super-2 number, since 2×3993503² = 31896132422018, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3993503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68825 + ... + 68882.

It is an arithmetic number, because the mean of its divisors is an integer number (1032810).

Almost surely, 2^3993503 is an apocalyptic number.

3993503 is a deficient number, since it is larger than the sum of its proper divisors (137737).

3993503 is a wasteful number, since it uses less digits than its factorization.

3993503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137736.

The product of its (nonzero) digits is 10935, while the sum is 32.

The square root of 3993503 is about 1998.3750899168. The cubic root of 3993503 is about 158.6541140844.

The spelling of 3993503 in words is "three million, nine hundred ninety-three thousand, five hundred three".