84539 has 8 divisors (see below), whose sum is σ = 104160. Its totient is φ = 66816.

The previous prime is 84533. The next prime is 84551. The reversal of 84539 is 93548.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84539 - 2⁴ = 84523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374 + ... + 555.

It is an arithmetic number, because the mean of its divisors is an integer number (13020).

2⁸⁴⁵³⁹ is an apocalyptic number.

84539 is a deficient number, since it is larger than the sum of its proper divisors (19621).

84539 is a wasteful number, since it uses less digits than its factorization.

84539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949.

The product of its digits is 4320, while the sum is 29.

The square root of 84539 is about 290.7559113758. The cubic root of 84539 is about 43.8886648021. Note that the first 3 decimals are identical.

Subtracting 84539 from its reverse (93548), we obtain a palindrome (9009).

The spelling of 84539 in words is "eighty-four thousand, five hundred thirty-nine".