91348717 has 2 divisors, whose sum is σ = 91348718. Its totient is φ = 91348716.

The previous prime is 91348693. The next prime is 91348729. The reversal of 91348717 is 71784319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81198121 + 10150596 = 9011^2 + 3186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91348717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91348717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91348417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45674358 + 45674359.

It is an arithmetic number, because the mean of its divisors is an integer number (45674359).

Almost surely, 2^91348717 is an apocalyptic number.

It is an amenable number.

91348717 is a deficient number, since it is larger than the sum of its proper divisors (1).

91348717 is an equidigital number, since it uses as much as digits as its factorization.

91348717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 91348717 is about 9557.6522744867. The cubic root of 91348717 is about 450.3679574815.

The spelling of 91348717 in words is "ninety-one million, three hundred forty-eight thousand, seven hundred seventeen".