904003 has 4 divisors (see below), whose sum is σ = 908928. Its totient is φ = 899080.

The previous prime is 903979. The next prime is 904019. The reversal of 904003 is 300409.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-904003 is a prime.

It is a Duffinian number.

904003 is a lucky number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (904073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2176 + ... + 2557.

It is an arithmetic number, because the mean of its divisors is an integer number (227232).

2⁹⁰⁴⁰⁰³ is an apocalyptic number.

904003 is a deficient number, since it is larger than the sum of its proper divisors (4925).

904003 is a wasteful number, since it uses less digits than its factorization.

904003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4924.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 904003 is about 950.7907235559. The cubic root of 904003 is about 96.6918695020.

The spelling of 904003 in words is "nine hundred four thousand, three".