404344223 has 2 divisors, whose sum is σ = 404344224. Its totient is φ = 404344222.

The previous prime is 404344181. The next prime is 404344229. The reversal of 404344223 is 322443404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404344223 - 2⁶ = 404344159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404344192 and 404344201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404344229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202172111 + 202172112.

It is an arithmetic number, because the mean of its divisors is an integer number (202172112).

Almost surely, 2^404344223 is an apocalyptic number.

404344223 is a deficient number, since it is larger than the sum of its proper divisors (1).

404344223 is an equidigital number, since it uses as much as digits as its factorization.

404344223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 404344223 is about 20108.3122862164. The cubic root of 404344223 is about 739.4640769052.

Adding to 404344223 its reverse (322443404), we get a palindrome (726787627).

The spelling of 404344223 in words is "four hundred four million, three hundred forty-four thousand, two hundred twenty-three".