91108327 has 4 divisors (see below), whose sum is σ = 91130976. Its totient is φ = 91085680.

The previous prime is 91108309. The next prime is 91108379. The reversal of 91108327 is 72380119.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72380119 = 7 ⋅10340017.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91108327 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91102327) 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 in 3 ways as a sum of consecutive naturals, for example, 3478 + ... + 13939.

It is an arithmetic number, because the mean of its divisors is an integer number (22782744).

Almost surely, 2^91108327 is an apocalyptic number.

91108327 is a deficient number, since it is larger than the sum of its proper divisors (22649).

91108327 is a wasteful number, since it uses less digits than its factorization.

91108327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22648.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 91108327 is about 9545.0682030041. The cubic root of 91108327 is about 449.9725530585.

The spelling of 91108327 in words is "ninety-one million, one hundred eight thousand, three hundred twenty-seven".