404040323 has 2 divisors, whose sum is σ = 404040324. Its totient is φ = 404040322.

The previous prime is 404040317. The next prime is 404040337. The reversal of 404040323 is 323040404.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404040323 - 2⁸ = 404040067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404040295 and 404040304.

It is not a weakly prime, because it can be changed into another prime (404040353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202020161 + 202020162.

It is an arithmetic number, because the mean of its divisors is an integer number (202020162).

Almost surely, 2^404040323 is an apocalyptic number.

404040323 is a deficient number, since it is larger than the sum of its proper divisors (1).

404040323 is an equidigital number, since it uses as much as digits as its factorization.

404040323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 404040323 is about 20100.7542893295. The cubic root of 404040323 is about 739.2787731933.

Adding to 404040323 its reverse (323040404), we get a palindrome (727080727).

The spelling of 404040323 in words is "four hundred four million, forty thousand, three hundred twenty-three".