100859 has 8 divisors (see below), whose sum is σ = 112752. Its totient is φ = 89440.

The previous prime is 100853. The next prime is 100907. The reversal of 100859 is 958001.

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 100859 - 2¹² = 96763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497 + ... + 669.

It is an arithmetic number, because the mean of its divisors is an integer number (14094).

2¹⁰⁰⁸⁵⁹ is an apocalyptic number.

100859 is a deficient number, since it is larger than the sum of its proper divisors (11893).

100859 is a wasteful number, since it uses less digits than its factorization.

100859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 100859 is about 317.5830600016. The cubic root of 100859 is about 46.5484137532.

It can be divided in two parts, 100 and 859, that added together give a palindrome (959).

The spelling of 100859 in words is "one hundred thousand, eight hundred fifty-nine".