83859 has 4 divisors (see below), whose sum is σ = 111816. Its totient is φ = 55904.

The previous prime is 83857. The next prime is 83869. The reversal of 83859 is 95838.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83859 - 2¹ = 83857 is a prime.

It is a D-number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (83857) 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, 13974 + ... + 13979.

It is an arithmetic number, because the mean of its divisors is an integer number (27954).

2⁸³⁸⁵⁹ is an apocalyptic number.

83859 is a deficient number, since it is larger than the sum of its proper divisors (27957).

83859 is a wasteful number, since it uses less digits than its factorization.

83859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27956.

The product of its digits is 8640, while the sum is 33.

The square root of 83859 is about 289.5841846510. The cubic root of 83859 is about 43.7706732229.

The spelling of 83859 in words is "eighty-three thousand, eight hundred fifty-nine".