91693241 has 2 divisors, whose sum is σ = 91693242. Its totient is φ = 91693240.

The previous prime is 91693237. The next prime is 91693279. The reversal of 91693241 is 14239619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88435216 + 3258025 = 9404^2 + 1805^2 .

It is a cyclic number.

It is not a de Polignac number, because 91693241 - 2² = 91693237 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91693211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45846620 + 45846621.

It is an arithmetic number, because the mean of its divisors is an integer number (45846621).

Almost surely, 2^91693241 is an apocalyptic number.

It is an amenable number.

91693241 is a deficient number, since it is larger than the sum of its proper divisors (1).

91693241 is an equidigital number, since it uses as much as digits as its factorization.

91693241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 91693241 is about 9575.6587762931. The cubic root of 91693241 is about 450.9334385539.

The spelling of 91693241 in words is "ninety-one million, six hundred ninety-three thousand, two hundred forty-one".