2116859 has 4 divisors (see below), whose sum is σ = 2137920. Its totient is φ = 2095800.

The previous prime is 2116837. The next prime is 2116867. The reversal of 2116859 is 9586112.

2116859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2116859 - 2¹⁶ = 2051323 is a prime.

It is a super-3 number, since 3×2116859³ = 28457519954443283337, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116459) 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 3 ways as a sum of consecutive naturals, for example, 10379 + ... + 10580.

It is an arithmetic number, because the mean of its divisors is an integer number (534480).

2^2116859 is an apocalyptic number.

2116859 is a deficient number, since it is larger than the sum of its proper divisors (21061).

2116859 is a wasteful number, since it uses less digits than its factorization.

2116859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21060.

The product of its digits is 4320, while the sum is 32.

The square root of 2116859 is about 1454.9429542082. The cubic root of 2116859 is about 128.3996905755.

The spelling of 2116859 in words is "two million, one hundred sixteen thousand, eight hundred fifty-nine".