90364091 has 2 divisors, whose sum is σ = 90364092. Its totient is φ = 90364090.

The previous prime is 90364081. The next prime is 90364111. The reversal of 90364091 is 19046309.

It is a weak prime.

It is an emirp because it is prime and its reverse (19046309) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90364091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90364081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45182045 + 45182046.

It is an arithmetic number, because the mean of its divisors is an integer number (45182046).

Almost surely, 2^90364091 is an apocalyptic number.

90364091 is a deficient number, since it is larger than the sum of its proper divisors (1).

90364091 is an equidigital number, since it uses as much as digits as its factorization.

90364091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 90364091 is about 9506.0028929093. The cubic root of 90364091 is about 448.7439723691.

The spelling of 90364091 in words is "ninety million, three hundred sixty-four thousand, ninety-one".