404233091 has 2 divisors, whose sum is σ = 404233092. Its totient is φ = 404233090.

The previous prime is 404233069. The next prime is 404233111. The reversal of 404233091 is 190332404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404233091 - 2¹⁸ = 403970947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404233091.

It is not a weakly prime, because it can be changed into another prime (404233051) 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, 202116545 + 202116546.

It is an arithmetic number, because the mean of its divisors is an integer number (202116546).

Almost surely, 2^404233091 is an apocalyptic number.

404233091 is a deficient number, since it is larger than the sum of its proper divisors (1).

404233091 is an equidigital number, since it uses as much as digits as its factorization.

404233091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 404233091 is about 20105.5487614738. The cubic root of 404233091 is about 739.3963246889.

Adding to 404233091 its reverse (190332404), we get a palindrome (594565495).

The spelling of 404233091 in words is "four hundred four million, two hundred thirty-three thousand, ninety-one".