209
CWE-209 is information exposure through an error message.
- Odd
- Composite
Where 209 fits
Why 209 is special
A stack trace on a production page tells an attacker the framework, the version, the file paths and often the database schema.
Factors & digit properties
- Divisors (4)
- 1, 11, 19, 209
- Prime factorisation
- 11 × 19
- Digit sum
- 11
- Digital root
- 2
Representations
- Decimal
- 209
- Binary
- 11010001
- Octal
- 321
- Hexadecimal
- d1
- Roman numeral
- CCIX
- Scientific notation
- 2.090 × 10^2
Other mathematical patterns
- Deficient number
- Semiprime
- Harshad (Niven) number
Related numbers & connections
An error page and a log file leak the same internal detail to different audiences.
View 532 →Numbers Around Us
- appears alongside532
why?
Strength 0.50, confidence "high".
Technology & computing
CWE-209 covers error messages disclosing internal state such as stack traces, file paths, query fragments or version details to unauthorised users.
DocumentedTechnology & computingGeography: International — MITRE CWEPeriod: 2006–
Common questions
Is 209 a prime number?
No, 209 is not prime.
What are the factors of 209?
The factors of 209 are 1, 11, 19, 209.
What is 209 in Roman numerals?
209 in Roman numerals is CCIX.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 3 August 2026