404424403 has 2 divisors, whose sum is σ = 404424404. Its totient is φ = 404424402.

The previous prime is 404424337. The next prime is 404424421. The reversal of 404424403 is 304424404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404424403 is a prime.

It is not a weakly prime, because it can be changed into another prime (404484403) 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 as a sum of consecutive naturals, namely, 202212201 + 202212202.

It is an arithmetic number, because the mean of its divisors is an integer number (202212202).

Almost surely, 2^404424403 is an apocalyptic number.

404424403 is a deficient number, since it is larger than the sum of its proper divisors (1).

404424403 is an equidigital number, since it uses as much as digits as its factorization.

404424403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 404424403 is about 20110.3058902643. The cubic root of 404424403 is about 739.5129513606.

Adding to 404424403 its reverse (304424404), we get a palindrome (708848807).

Subtracting from 404424403 its reverse (304424404), we obtain a palindrome (99999999).

The spelling of 404424403 in words is "four hundred four million, four hundred twenty-four thousand, four hundred three".