404361823 has 2 divisors, whose sum is σ = 404361824. Its totient is φ = 404361822.

The previous prime is 404361791. The next prime is 404361851. The reversal of 404361823 is 328163404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404361823 - 2⁵ = 404361791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404361323) 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, 202180911 + 202180912.

It is an arithmetic number, because the mean of its divisors is an integer number (202180912).

Almost surely, 2^404361823 is an apocalyptic number.

404361823 is a deficient number, since it is larger than the sum of its proper divisors (1).

404361823 is an equidigital number, since it uses as much as digits as its factorization.

404361823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 404361823 is about 20108.7499114192. The cubic root of 404361823 is about 739.4748057002.

The spelling of 404361823 in words is "four hundred four million, three hundred sixty-one thousand, eight hundred twenty-three".