8243 has 2 divisors, whose sum is σ = 8244. Its totient is φ = 8242.

The previous prime is 8237. The next prime is 8263. The reversal of 8243 is 3428.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8243 - 2⁶ = 8179 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 8 + 4² + 2¹³ + 3³ .

It is a plaindrome in base 9.

It is not a weakly prime, because it can be changed into another prime (8233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4121 + 4122.

It is an arithmetic number, because the mean of its divisors is an integer number (4122).

2⁸²⁴³ is an apocalyptic number.

8243 is a deficient number, since it is larger than the sum of its proper divisors (1).

8243 is an equidigital number, since it uses as much as digits as its factorization.

8243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 17.

The square root of 8243 is about 90.7909687139. The cubic root of 8243 is about 20.2004836011.

It can be divided in two parts, 82 and 43, that added together give a cube (125 = 5³).

The spelling of 8243 in words is "eight thousand, two hundred forty-three".