104891 has 2 divisors, whose sum is σ = 104892.
Its totient is φ = 104890.
The previous prime is 104879. The next prime is 104911. The reversal of 104891 is 198401.
104891 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 104891 - 26 = 104827 is a prime.
It is a super-2 number, since 2×1048912 = 22004243762, which contains 22 as substring.
It is a Chen prime.
It is a plaindrome in base 16.
It is not a weakly prime, because it can be changed into another prime (104801) 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, 52445 + 52446.
It is an arithmetic number, because the mean of its divisors is an integer number (52446).
2104891 is an apocalyptic number.
104891 is a deficient number, since it is larger than the sum of its proper divisors (1).
104891 is an equidigital number, since it uses as much as digits as its factorization.
104891 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 288, while the sum is 23.
The square root of 104891 is about 323.8688005968.
The cubic root of 104891 is about 47.1606094322.
The spelling of 104891 in words is "one hundred four thousand, eight hundred ninety-one".