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BaseRepresentation
bin100010101011
310001012
4202223
532334
614135
76320
oct4253
93035
102219
111738
12134b
131019
14b47
159ce
hex8ab

2219 has 4 divisors (see below), whose sum is σ = 2544. Its totient is φ = 1896.

The previous prime is 2213. The next prime is 2221. The reversal of 2219 is 9122.

2219 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, and also an emirpimes, since its reverse is a distinct semiprime: 9122 = 24561.

It is a cyclic number.

It is not a de Polignac number, because 2219 - 24 = 2203 is a prime.

It is a super-2 number, since 2×22192 = 9847922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12, base 15 and base 16.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (2213) 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, 152 + ... + 165.

It is an arithmetic number, because the mean of its divisors is an integer number (636).

2219 is a deficient number, since it is larger than the sum of its proper divisors (325).

2219 is an equidigital number, since it uses as much as digits as its factorization.

2219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324.

The product of its digits is 36, while the sum is 14.

The square root of 2219 is about 47.1062628533. The cubic root of 2219 is about 13.0432484662.

Subtracting 2219 from its reverse (9122), we obtain a triangular number (6903 = T117).

The spelling of 2219 in words is "two thousand, two hundred nineteen".

Divisors: 1 7 317 2219