91113093 has 24 divisors (see below), whose sum is σ = 138430656. Its totient is φ = 59875200.

The previous prime is 91113089. The next prime is 91113103. The reversal of 91113093 is 39031119.

It is not a de Polignac number, because 91113093 - 2² = 91113089 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91113023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14613 + ... + 19893.

It is an arithmetic number, because the mean of its divisors is an integer number (5767944).

Almost surely, 2^91113093 is an apocalyptic number.

It is an amenable number.

91113093 is a deficient number, since it is larger than the sum of its proper divisors (47317563).

91113093 is an equidigital number, since it uses as much as digits as its factorization.

91113093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5367 (or 5355 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 27.

The square root of 91113093 is about 9545.3178574629. The cubic root of 91113093 is about 449.9803991462.

The spelling of 91113093 in words is "ninety-one million, one hundred thirteen thousand, ninety-three".