109859 has 2 divisors, whose sum is σ = 109860. Its totient is φ = 109858.

The previous prime is 109849. The next prime is 109873. The reversal of 109859 is 958901.

It is a weak prime.

It is an emirp because it is prime and its reverse (958901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109859 - 2⁴ = 109843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (109819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54929 + 54930.

It is an arithmetic number, because the mean of its divisors is an integer number (54930).

2¹⁰⁹⁸⁵⁹ is an apocalyptic number.

109859 is a deficient number, since it is larger than the sum of its proper divisors (1).

109859 is an equidigital number, since it uses as much as digits as its factorization.

109859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 109859 is about 331.4498453763. The cubic root of 109859 is about 47.8937173868.

The spelling of 109859 in words is "one hundred nine thousand, eight hundred fifty-nine".