91944841 has 2 divisors, whose sum is σ = 91944842. Its totient is φ = 91944840.

The previous prime is 91944821. The next prime is 91944847. The reversal of 91944841 is 14844919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54686025 + 37258816 = 7395^2 + 6104^2 .

It is a cyclic number.

It is not a de Polignac number, because 91944841 - 2²³ = 83556233 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 91944794 and 91944803.

It is not a weakly prime, because it can be changed into another prime (91944847) 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, 45972420 + 45972421.

It is an arithmetic number, because the mean of its divisors is an integer number (45972421).

Almost surely, 2^91944841 is an apocalyptic number.

It is an amenable number.

91944841 is a deficient number, since it is larger than the sum of its proper divisors (1).

91944841 is an equidigital number, since it uses as much as digits as its factorization.

91944841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 40.

The square root of 91944841 is about 9588.7872538711. The cubic root of 91944841 is about 451.3455054232.

The spelling of 91944841 in words is "ninety-one million, nine hundred forty-four thousand, eight hundred forty-one".