8539 has 2 divisors, whose sum is σ = 8540. Its totient is φ = 8538.

The previous prime is 8537. The next prime is 8543. The reversal of 8539 is 9358.

8539 is digitally balanced in base 2 and base 3, because in such bases 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 8539 - 2¹ = 8537 is a prime.

Together with 8537, it forms a pair of twin primes.

It is an Ulam number.

8539 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8537) 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, 4269 + 4270.

It is an arithmetic number, because the mean of its divisors is an integer number (4270).

2⁸⁵³⁹ is an apocalyptic number.

8539 is a deficient number, since it is larger than the sum of its proper divisors (1).

8539 is an equidigital number, since it uses as much as digits as its factorization.

8539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 8539 is about 92.4067097131. The cubic root of 8539 is about 20.4394405506.

The spelling of 8539 in words is "eight thousand, five hundred thirty-nine".