2004402403 has 4 divisors (see below), whose sum is σ = 2004838200. Its totient is φ = 2003966608.

The previous prime is 2004402377. The next prime is 2004402451. The reversal of 2004402403 is 3042044002.

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 2004402403 - 2¹⁷ = 2004271331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2004402203) 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, 210925 + ... + 220222.

It is an arithmetic number, because the mean of its divisors is an integer number (501209550).

Almost surely, 2^2004402403 is an apocalyptic number.

2004402403 is a deficient number, since it is larger than the sum of its proper divisors (435797).

2004402403 is an equidigital number, since it uses as much as digits as its factorization.

2004402403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435796.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 2004402403 is about 44770.5528556439. The cubic root of 2004402403 is about 1260.8448191270.

Adding to 2004402403 its reverse (3042044002), we get a palindrome (5046446405).

The spelling of 2004402403 in words is "two billion, four million, four hundred two thousand, four hundred three".