91911359 has 2 divisors, whose sum is σ = 91911360. Its totient is φ = 91911358.

The previous prime is 91911343. The next prime is 91911361. The reversal of 91911359 is 95311919.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91911359 - 2⁴ = 91911343 is a prime.

Together with 91911361, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91941359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45955679 + 45955680.

It is an arithmetic number, because the mean of its divisors is an integer number (45955680).

Almost surely, 2^91911359 is an apocalyptic number.

91911359 is a deficient number, since it is larger than the sum of its proper divisors (1).

91911359 is an equidigital number, since it uses as much as digits as its factorization.

91911359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10935, while the sum is 38.

The square root of 91911359 is about 9587.0412015387. The cubic root of 91911359 is about 451.2907124815.

The spelling of 91911359 in words is "ninety-one million, nine hundred eleven thousand, three hundred fifty-nine".