91150044 has 48 divisors (see below), whose sum is σ = 223319040. Its totient is φ = 28897920.

The previous prime is 91150001. The next prime is 91150069. The reversal of 91150044 is 44005119.

It is a junction number, because it is equal to n+sod(n) for n = 91149996 and 91150023.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19872 + ... + 24024.

It is an arithmetic number, because the mean of its divisors is an integer number (4652480).

Almost surely, 2^91150044 is an apocalyptic number.

It is an amenable number.

91150044 is an abundant number, since it is smaller than the sum of its proper divisors (132168996).

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

91150044 is a wasteful number, since it uses less digits than its factorization.

91150044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250 (or 4248 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 91150044 is about 9547.2532175490. The cubic root of 91150044 is about 450.0412209153.

The spelling of 91150044 in words is "ninety-one million, one hundred fifty thousand, forty-four".