404402263 has 2 divisors, whose sum is σ = 404402264. Its totient is φ = 404402262.

The previous prime is 404402237. The next prime is 404402279. The reversal of 404402263 is 362204404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404402263 - 2²⁵ = 370847831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404402203) 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, 202201131 + 202201132.

It is an arithmetic number, because the mean of its divisors is an integer number (202201132).

Almost surely, 2^404402263 is an apocalyptic number.

404402263 is a deficient number, since it is larger than the sum of its proper divisors (1).

404402263 is an equidigital number, since it uses as much as digits as its factorization.

404402263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 404402263 is about 20109.7554187016. The cubic root of 404402263 is about 739.4994563659.

Adding to 404402263 its reverse (362204404), we get a palindrome (766606667).

The spelling of 404402263 in words is "four hundred four million, four hundred two thousand, two hundred sixty-three".