2199 has 4 divisors (see below), whose sum is σ = 2936.
Its totient is φ = 1464.
The previous prime is 2179. The next prime is 2203. The reversal of 2199 is 9912.
It can be divided in two parts, 21 and 99, that added together give a triangular number (120 = T15).
It is a happy number.
2199 is nontrivially palindromic in base 15.
2199 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 not a de Polignac number, because 2199 - 211 = 151 is a prime.
It is a D-number.
It is a Duffinian number.
2199 is an undulating number in base 15.
2199 is a modest number, since divided by 99 gives 21 as remainder.
It is a plaindrome in base 12.
It is a nialpdrome in base 14.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2129) 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, 364 + ... + 369.
It is an arithmetic number, because the mean of its divisors is an integer number (734).
2199 is a deficient number, since it is larger than the sum of its proper divisors (737).
2199 is an equidigital number, since it uses as much as digits as its factorization.
2199 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 736.
The product of its digits is 162, while the sum is 21.
The square root of 2199 is about 46.8934963508.
The cubic root of 2199 is about 13.0039435768.
The spelling of 2199 in words is "two thousand, one hundred ninety-nine".