91241244 has 36 divisors (see below), whose sum is σ = 244206144. Its totient is φ = 28624512.

The previous prime is 91241239. The next prime is 91241251. The reversal of 91241244 is 44214219.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 73932 + ... + 75155.

It is an arithmetic number, because the mean of its divisors is an integer number (6783504).

Almost surely, 2^91241244 is an apocalyptic number.

It is an amenable number.

91241244 is an abundant number, since it is smaller than the sum of its proper divisors (152964900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91241244 is a wasteful number, since it uses less digits than its factorization.

91241244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149114 (or 149109 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 91241244 is about 9552.0282662898. The cubic root of 91241244 is about 450.1912668411.

The spelling of 91241244 in words is "ninety-one million, two hundred forty-one thousand, two hundred forty-four".