85843 has 2 divisors, whose sum is σ = 85844.
Its totient is φ = 85842.
The previous prime is 85837. The next prime is 85847. The reversal of 85843 is 34858.
It can be divided in two parts, 8584 and 3, that multiplied together give a palindrome (25752).
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 85843 - 29 = 85331 is a prime.
85843 is a lucky number.
It is not a weakly prime, because it can be changed into another prime (85847) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42921 + 42922.
It is an arithmetic number, because the mean of its divisors is an integer number (42922).
285843 is an apocalyptic number.
85843 is a deficient number, since it is larger than the sum of its proper divisors (1).
85843 is an equidigital number, since it uses as much as digits as its factorization.
85843 is an evil number, because the sum of its binary digits is even.
The product of its digits is 3840, while the sum is 28.
The square root of 85843 is about 292.9897609132.
The cubic root of 85843 is about 44.1131728447.
The spelling of 85843 in words is "eighty-five thousand, eight hundred forty-three".