8423 has 2 divisors, whose sum is σ = 8424.
Its totient is φ = 8422.
The previous prime is 8419. The next prime is 8429. The reversal of 8423 is 3248.
8423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 8423 - 22 = 8419 is a prime.
It is a plaindrome in base 9 and base 13.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (8429) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4211 + 4212.
It is an arithmetic number, because the mean of its divisors is an integer number (4212).
28423 is an apocalyptic number.
8423 is a deficient number, since it is larger than the sum of its proper divisors (1).
8423 is an equidigital number, since it uses as much as digits as its factorization.
8423 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 8423 is about 91.7769034126.
The cubic root of 8423 is about 20.3464634953.
The spelling of 8423 in words is "eight thousand, four hundred twenty-three".