404596091 has 2 divisors, whose sum is σ = 404596092. Its totient is φ = 404596090.

The previous prime is 404596079. The next prime is 404596109. The reversal of 404596091 is 190695404.

Together with next prime (404596109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404596091 - 2¹⁸ = 404333947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404596691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202298045 + 202298046.

It is an arithmetic number, because the mean of its divisors is an integer number (202298046).

Almost surely, 2^404596091 is an apocalyptic number.

404596091 is a deficient number, since it is larger than the sum of its proper divisors (1).

404596091 is an equidigital number, since it uses as much as digits as its factorization.

404596091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 404596091 is about 20114.5740944222. The cubic root of 404596091 is about 739.6175836365.

The spelling of 404596091 in words is "four hundred four million, five hundred ninety-six thousand, ninety-one".