91044243 has 20 divisors (see below), whose sum is σ = 136392168. Its totient is φ = 60523200.

The previous prime is 91044221. The next prime is 91044251. The reversal of 91044243 is 34244019.

It is not a de Polignac number, because 91044243 - 2⁵ = 91044211 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (91044203) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31080 + ... + 33882.

Almost surely, 2^91044243 is an apocalyptic number.

91044243 is a deficient number, since it is larger than the sum of its proper divisors (45347925).

91044243 is a wasteful number, since it uses less digits than its factorization.

91044243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216 (or 3207 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 91044243 is about 9541.7106956772. The cubic root of 91044243 is about 449.8670273778.

The spelling of 91044243 in words is "ninety-one million, forty-four thousand, two hundred forty-three".