2004403 has 4 divisors (see below), whose sum is σ = 2011240. Its totient is φ = 1997568.

The previous prime is 2004383. The next prime is 2004421. The reversal of 2004403 is 3044002.

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

It is a 8-Lehmer number, since φ(2004403) divides (2004403-1)⁸.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2004403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2004433) 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 3 ways as a sum of consecutive naturals, for example, 2958 + ... + 3571.

It is an arithmetic number, because the mean of its divisors is an integer number (502810).

It is a Poulet number, since it divides 2^2004402-1.

2^2004403 is an apocalyptic number.

2004403 is a deficient number, since it is larger than the sum of its proper divisors (6837).

2004403 is an equidigital number, since it uses as much as digits as its factorization.

2004403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6836.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 2004403 is about 1415.7694021273. The cubic root of 2004403 is about 126.0844944305.

Adding to 2004403 its reverse (3044002), we get a palindrome (5048405).

The spelling of 2004403 in words is "two million, four thousand, four hundred three".