2099843 has 4 divisors (see below), whose sum is σ = 2102760. Its totient is φ = 2096928.

The previous prime is 2099837. The next prime is 2099863. The reversal of 2099843 is 3489902.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2099843 - 2⁴ = 2099827 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 0 + 9² + 9³ + 8⁷ + 4⁵ + 3⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2099863) 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, 488 + ... + 2106.

It is an arithmetic number, because the mean of its divisors is an integer number (525690).

2^2099843 is an apocalyptic number.

2099843 is a deficient number, since it is larger than the sum of its proper divisors (2917).

2099843 is a wasteful number, since it uses less digits than its factorization.

2099843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 2099843 is about 1449.0835034600. The cubic root of 2099843 is about 128.0547251346.

The spelling of 2099843 in words is "two million, ninety-nine thousand, eight hundred forty-three".