91867 has 2 divisors, whose sum is σ = 91868.
Its totient is φ = 91866.
The previous prime is 91841. The next prime is 91873. The reversal of 91867 is 76819.
It is a strong prime.
It is an emirp because it is prime and its reverse (76819) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 91867 - 211 = 89819 is a prime.
91867 is a lucky number.
It is a plaindrome in base 14.
It is not a weakly prime, because it can be changed into another prime (91807) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45933 + 45934.
It is an arithmetic number, because the mean of its divisors is an integer number (45934).
291867 is an apocalyptic number.
91867 is a deficient number, since it is larger than the sum of its proper divisors (1).
91867 is an equidigital number, since it uses as much as digits as its factorization.
91867 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 3024, while the sum is 31.
The square root of 91867 is about 303.0956944597.
The cubic root of 91867 is about 45.1218098946.
The spelling of 91867 in words is "ninety-one thousand, eight hundred sixty-seven".