2109844 has 12 divisors (see below), whose sum is σ = 4027968. Its totient is φ = 959000.

The previous prime is 2109841. The next prime is 2109857. The reversal of 2109844 is 4489012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23932 + ... + 24019.

It is an arithmetic number, because the mean of its divisors is an integer number (335664).

2^2109844 is an apocalyptic number.

It is an amenable number.

2109844 is a deficient number, since it is larger than the sum of its proper divisors (1918124).

2109844 is a wasteful number, since it uses less digits than its factorization.

2109844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47966 (or 47964 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2109844 is about 1452.5302062264. The cubic root of 2109844 is about 128.2577002294.

The spelling of 2109844 in words is "two million, one hundred nine thousand, eight hundred forty-four".