2109927 has 4 divisors (see below), whose sum is σ = 2813240. Its totient is φ = 1406616.

The previous prime is 2109911. The next prime is 2109941. The reversal of 2109927 is 7299012.

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

It is not a de Polignac number, because 2109927 - 2⁴ = 2109911 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2109894 and 2109903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109127) 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, 351652 + ... + 351657.

It is an arithmetic number, because the mean of its divisors is an integer number (703310).

2^2109927 is an apocalyptic number.

2109927 is a deficient number, since it is larger than the sum of its proper divisors (703313).

2109927 is an equidigital number, since it uses as much as digits as its factorization.

2109927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703312.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 2109927 is about 1452.5587767798. The cubic root of 2109927 is about 128.2593820677.

The spelling of 2109927 in words is "two million, one hundred nine thousand, nine hundred twenty-seven".