404323229 has 2 divisors, whose sum is σ = 404323230. Its totient is φ = 404323228.

The previous prime is 404323219. The next prime is 404323237. The reversal of 404323229 is 922323404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234151204 + 170172025 = 15302^2 + 13045^2 .

It is a cyclic number.

It is not a de Polignac number, because 404323229 - 2¹² = 404319133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404323219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202161614 + 202161615.

It is an arithmetic number, because the mean of its divisors is an integer number (202161615).

Almost surely, 2^404323229 is an apocalyptic number.

It is an amenable number.

404323229 is a deficient number, since it is larger than the sum of its proper divisors (1).

404323229 is an equidigital number, since it uses as much as digits as its factorization.

404323229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 404323229 is about 20107.7902565150. The cubic root of 404323229 is about 739.4512787523.

It can be divided in two parts, 4043 and 23229, that added together give a palindrome (27272).

The spelling of 404323229 in words is "four hundred four million, three hundred twenty-three thousand, two hundred twenty-nine".