91246889041 has 27 divisors (see below), whose sum is σ = 116700799593. Its totient is φ = 71083347720.

The previous prime is 91246889033. The next prime is 91246889057. The reversal of 91246889041 is 14098864219.

The square root of 91246889041 is 302071.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 91246889041 - 2³ = 91246889033 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 91246889041.

It is not an unprimeable number, because it can be changed into a prime (91246889341) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 23257506 + ... + 23261428.

Almost surely, 2^91246889041 is an apocalyptic number.

91246889041 is the 302071-st square number.

91246889041 is the 151036-th centered octagonal number.

It is an amenable number.

91246889041 is a deficient number, since it is larger than the sum of its proper divisors (25453910552).

91246889041 is an frugal number, since it uses more digits than its factorization.

91246889041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7882 (or 3941 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 52.

The spelling of 91246889041 in words is "ninety-one billion, two hundred forty-six million, eight hundred eighty-nine thousand, forty-one".