83539 has 4 divisors (see below), whose sum is σ = 84280. Its totient is φ = 82800.

The previous prime is 83537. The next prime is 83557. The reversal of 83539 is 93538.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93538 = 2 ⋅46769.

It is a cyclic number.

It is not a de Polignac number, because 83539 - 2¹ = 83537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162 + ... + 439.

It is an arithmetic number, because the mean of its divisors is an integer number (21070).

2⁸³⁵³⁹ is an apocalyptic number.

83539 is a deficient number, since it is larger than the sum of its proper divisors (741).

83539 is a wasteful number, since it uses less digits than its factorization.

83539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740.

The product of its digits is 3240, while the sum is 28.

The square root of 83539 is about 289.0311401908. The cubic root of 83539 is about 43.7149269926.

Subtracting 83539 from its reverse (93538), we obtain a palindrome (9999).

The spelling of 83539 in words is "eighty-three thousand, five hundred thirty-nine".