91123244 has 6 divisors (see below), whose sum is σ = 159465684. Its totient is φ = 45561620.

The previous prime is 91123243. The next prime is 91123289. The reversal of 91123244 is 44232119.

It is not an unprimeable number, because it can be changed into a prime (91123243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11390402 + ... + 11390409.

It is an arithmetic number, because the mean of its divisors is an integer number (26577614).

Almost surely, 2^91123244 is an apocalyptic number.

It is an amenable number.

91123244 is a deficient number, since it is larger than the sum of its proper divisors (68342440).

91123244 is a wasteful number, since it uses less digits than its factorization.

91123244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22780815 (or 22780813 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 91123244 is about 9545.8495693155. The cubic root of 91123244 is about 449.9971094465.

The spelling of 91123244 in words is "ninety-one million, one hundred twenty-three thousand, two hundred forty-four".