91169411 has 2 divisors, whose sum is σ = 91169412. Its totient is φ = 91169410.

The previous prime is 91169399. The next prime is 91169413. The reversal of 91169411 is 11496119.

It is a strong prime.

It is an emirp because it is prime and its reverse (11496119) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91169411 - 2⁶ = 91169347 is a prime.

It is a Sophie Germain prime.

Together with 91169413, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_5280881 and since 91169411 and 5280881 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (91169413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45584705 + 45584706.

It is an arithmetic number, because the mean of its divisors is an integer number (45584706).

Almost surely, 2^91169411 is an apocalyptic number.

91169411 is a deficient number, since it is larger than the sum of its proper divisors (1).

91169411 is an equidigital number, since it uses as much as digits as its factorization.

91169411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 32.

The square root of 91169411 is about 9548.2674344616. The cubic root of 91169411 is about 450.0730926538.

The spelling of 91169411 in words is "ninety-one million, one hundred sixty-nine thousand, four hundred eleven".