404423533 has 2 divisors, whose sum is σ = 404423534. Its totient is φ = 404423532.

The previous prime is 404423527. The next prime is 404423561. The reversal of 404423533 is 335324404.

It is an a-pointer prime, because the next prime (404423561) can be obtained adding 404423533 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341030089 + 63393444 = 18467^2 + 7962^2 .

It is a cyclic number.

It is not a de Polignac number, because 404423533 - 2⁹ = 404423021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404423563) 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, 202211766 + 202211767.

It is an arithmetic number, because the mean of its divisors is an integer number (202211767).

Almost surely, 2^404423533 is an apocalyptic number.

It is an amenable number.

404423533 is a deficient number, since it is larger than the sum of its proper divisors (1).

404423533 is an equidigital number, since it uses as much as digits as its factorization.

404423533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 28.

The square root of 404423533 is about 20110.2842595524. The cubic root of 404423533 is about 739.5124210788.

Adding to 404423533 its reverse (335324404), we get a palindrome (739747937).

The spelling of 404423533 in words is "four hundred four million, four hundred twenty-three thousand, five hundred thirty-three".