91168244 has 6 divisors (see below), whose sum is σ = 159544434. Its totient is φ = 45584120.

The previous prime is 91168243. The next prime is 91168261. The reversal of 91168244 is 44286119.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 83539600 + 7628644 = 9140^2 + 2762^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91168243) 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 as a sum of consecutive naturals, namely, 11396027 + ... + 11396034.

It is an arithmetic number, because the mean of its divisors is an integer number (26590739).

Almost surely, 2^91168244 is an apocalyptic number.

It is an amenable number.

91168244 is a deficient number, since it is larger than the sum of its proper divisors (68376190).

91168244 is a wasteful number, since it uses less digits than its factorization.

91168244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22792065 (or 22792063 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 91168244 is about 9548.2063237029. The cubic root of 91168244 is about 450.0711722818.

The spelling of 91168244 in words is "ninety-one million, one hundred sixty-eight thousand, two hundred forty-four".