2009199 has 4 divisors (see below), whose sum is σ = 2678936. Its totient is φ = 1339464.

The previous prime is 2009191. The next prime is 2009209. The reversal of 2009199 is 9919002.

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

It is not a de Polignac number, because 2009199 - 2³ = 2009191 is a prime.

It is a D-number.

It is a Duffinian number.

2009199 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334864 + ... + 334869.

It is an arithmetic number, because the mean of its divisors is an integer number (669734).

2^2009199 is an apocalyptic number.

2009199 is a deficient number, since it is larger than the sum of its proper divisors (669737).

2009199 is an equidigital number, since it uses as much as digits as its factorization.

2009199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669736.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 2009199 is about 1417.4621688073. The cubic root of 2009199 is about 126.1849764825.

The spelling of 2009199 in words is "two million, nine thousand, one hundred ninety-nine".