91716943 has 2 divisors, whose sum is σ = 91716944. Its totient is φ = 91716942.

The previous prime is 91716931. The next prime is 91716973. The reversal of 91716943 is 34961719.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91716943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91716896 and 91716905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91716973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45858471 + 45858472.

It is an arithmetic number, because the mean of its divisors is an integer number (45858472).

Almost surely, 2^91716943 is an apocalyptic number.

91716943 is a deficient number, since it is larger than the sum of its proper divisors (1).

91716943 is an equidigital number, since it uses as much as digits as its factorization.

91716943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 40.

The square root of 91716943 is about 9576.8963135245. The cubic root of 91716943 is about 450.9722894858.

The spelling of 91716943 in words is "ninety-one million, seven hundred sixteen thousand, nine hundred forty-three".