91916911 has 2 divisors, whose sum is σ = 91916912. Its totient is φ = 91916910.

The previous prime is 91916879. The next prime is 91916941. The reversal of 91916911 is 11961919.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91916911 - 2⁵ = 91916879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91916941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45958455 + 45958456.

It is an arithmetic number, because the mean of its divisors is an integer number (45958456).

Almost surely, 2^91916911 is an apocalyptic number.

91916911 is a deficient number, since it is larger than the sum of its proper divisors (1).

91916911 is an equidigital number, since it uses as much as digits as its factorization.

91916911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4374, while the sum is 37.

The square root of 91916911 is about 9587.3307546991. The cubic root of 91916911 is about 451.2997991914.

The spelling of 91916911 in words is "ninety-one million, nine hundred sixteen thousand, nine hundred eleven".