2108791 has 4 divisors (see below), whose sum is σ = 2219800. Its totient is φ = 1997784.

The previous prime is 2108773. The next prime is 2108807. The reversal of 2108791 is 1978012.

2108791 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 2108791 - 2⁵ = 2108759 is a prime.

It is a super-3 number, since 3×2108791³ = 28133377451920673013, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2108761) 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, 55476 + ... + 55513.

It is an arithmetic number, because the mean of its divisors is an integer number (554950).

2^2108791 is an apocalyptic number.

2108791 is a deficient number, since it is larger than the sum of its proper divisors (111009).

2108791 is a wasteful number, since it uses less digits than its factorization.

2108791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111008.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 2108791 is about 1452.1676900413. The cubic root of 2108791 is about 128.2363593415.

The spelling of 2108791 in words is "two million, one hundred eight thousand, seven hundred ninety-one".