91346791 has 2 divisors, whose sum is σ = 91346792. Its totient is φ = 91346790.

The previous prime is 91346789. The next prime is 91346833. The reversal of 91346791 is 19764319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91346791 - 2¹ = 91346789 is a prime.

Together with 91346789, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91346711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45673395 + 45673396.

It is an arithmetic number, because the mean of its divisors is an integer number (45673396).

Almost surely, 2^91346791 is an apocalyptic number.

91346791 is a deficient number, since it is larger than the sum of its proper divisors (1).

91346791 is an equidigital number, since it uses as much as digits as its factorization.

91346791 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 91346791 is about 9557.5515169943. The cubic root of 91346791 is about 450.3647922673.

The spelling of 91346791 in words is "ninety-one million, three hundred forty-six thousand, seven hundred ninety-one".