1989
1989 is the year the Berlin Wall fell and the World Wide Web was proposed.
- Odd
- Composite
Where 1989 fits
Why 1989 is special
1989 was a year of endings and one quiet beginning. The Berlin Wall opened in November after a misread press conference, revolutions swept Central and Eastern Europe, and the Tiananmen Square protests were suppressed in June. In March, Tim Berners-Lee circulated a proposal at CERN that his manager annotated 'vague but exciting' — the World Wide Web.
Factors & digit properties
- Divisors (12)
- 1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989
- Prime factorisation
- 3^2 × 13 × 17
- Digit sum
- 27
- Digital root
- 9
Representations
- Decimal
- 1989
- Binary
- 11111000101
- Octal
- 3705
- Hexadecimal
- 7c5
- Roman numeral
- MCMLXXXIX
- Scientific notation
- 1.989 × 10^3
Other mathematical patterns
- Deficient number
Related numbers & connections
The Berlin Wall opened in 1989 and Germany reunified in 1990, faster than any plan had anticipated.
View 1990 →Technology & computing
In March 1989 Tim Berners-Lee circulated 'Information Management: A Proposal' at CERN. His manager's handwritten note on the cover read 'vague but exciting'. It described what became the World Wide Web, and it was submitted in the same year the Berlin Wall opened — two events that between them reshaped how information and people moved.
DocumentedTechnology & computingPeriod: 1989
Common questions
Is 1989 a prime number?
No, 1989 is not prime.
What are the factors of 1989?
The factors of 1989 are 1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989.
What is 1989 in Roman numerals?
1989 in Roman numerals is MCMLXXXIX.
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