404316091 has 2 divisors, whose sum is σ = 404316092. Its totient is φ = 404316090.

The previous prime is 404316019. The next prime is 404316161. The reversal of 404316091 is 190613404.

Together with previous prime (404316019) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404316091 - 2⁹ = 404315579 is a prime.

It is a super-3 number, since 3×404316091³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404316791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202158045 + 202158046.

It is an arithmetic number, because the mean of its divisors is an integer number (202158046).

Almost surely, 2^404316091 is an apocalyptic number.

404316091 is a deficient number, since it is larger than the sum of its proper divisors (1).

404316091 is an equidigital number, since it uses as much as digits as its factorization.

404316091 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 28.

The square root of 404316091 is about 20107.6127623346. The cubic root of 404316091 is about 739.4469272550.

Adding to 404316091 its reverse (190613404), we get a palindrome (594929495).

The spelling of 404316091 in words is "four hundred four million, three hundred sixteen thousand, ninety-one".