404040433 has 2 divisors, whose sum is σ = 404040434. Its totient is φ = 404040432.

The previous prime is 404040419. The next prime is 404040449. The reversal of 404040433 is 334040404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289272064 + 114768369 = 17008^2 + 10713^2 .

It is a cyclic number.

It is not a de Polignac number, because 404040433 - 2⁵ = 404040401 is a prime.

It is equal to p_21540208 and since 404040433 and 21540208 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (404040493) 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, 202020216 + 202020217.

It is an arithmetic number, because the mean of its divisors is an integer number (202020217).

Almost surely, 2^404040433 is an apocalyptic number.

It is an amenable number.

404040433 is a deficient number, since it is larger than the sum of its proper divisors (1).

404040433 is an equidigital number, since it uses as much as digits as its factorization.

404040433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 404040433 is about 20100.7570255451. The cubic root of 404040433 is about 739.2788402829.

Adding to 404040433 its reverse (334040404), we get a palindrome (738080837).

The spelling of 404040433 in words is "four hundred four million, forty thousand, four hundred thirty-three".