209
Number 209: Properties, Factors, and Mathematical Facts
Short answer
The number 209 is an odd composite number with 4 positive divisors. Its prime factorization is 11 × 19. It is also a deficient number, which gives it several notable mathematical relationships.
Is 209 prime?
ClassificationCompositeParityOddDivisor count4AbundanceDeficient
What is the prime factorization of 209?
Prime factorization
11 times 19
What are the divisors of 209?
Divisor count
4
Divisor sum
240
Proper divisor sum
31
- 1
- 11
- 19
- 209
How is 209 classified?
How is 209 represented in other numeral systems?
Decimal
209
Binary
11010001
Octal
321
Hexadecimal
Roman
CCIXLearn more →
In words
two hundred nine
Roots and powers
Square root
14.456832 Approximate
Cube root
5.934472 Approximate
Nearest lower square
196
Nearest higher square
225
Nearest lower cube
125
Nearest higher cube
216
What are the digit properties of 209?
Which numbers are related to 209?
Why these results are true
- 209 is composite because it has positive divisors other than 1 and itself.
Compare this number
FAQ for 209
- Is 209 prime?
- No
- What is the prime factorization of 209?
- 11 × 19
- Is 209 a perfect square?
- No
- What is 209 in binary?
- 11010001
- What is 209 in Roman numerals?
- CCIX