1889
1889 is the year the Eiffel Tower was completed.
- Odd
- Prime
Where 1889 fits
Why 1889 is special
It was built as a temporary entrance arch for the World's Fair and was due for demolition after twenty years. It survived because it proved useful as a radio antenna, which is a reminder that permanence is often accidental.
1889 is part of
Factors & digit properties
- Divisors (2)
- 1, 1889
- Prime factorisation
- 1889
- Digit sum
- 26
- Digital root
- 8
Representations
- Decimal
- 1889
- Binary
- 11101100001
- Octal
- 3541
- Hexadecimal
- 761
- Roman numeral
- MDCCCLXXXIX
- Scientific notation
- 1.889 × 10^3
Other mathematical patterns
- Deficient number
- Sophie Germain prime
Related numbers & connections
The Great Pyramid was the tallest structure on Earth for about 3,800 years, until the nineteenth century. The Eiffel Tower of 1889 is among the structures that finally exceeded it.
View 2560 →Technology & computing
The Eiffel Tower was a temporary entrance arch for the 1889 World's Fair with a twenty-year demolition date. It survived because it made an excellent radio antenna — a reminder that permanence is frequently accidental rather than intended.
DocumentedTechnology & computingGeography: FrancePeriod: 1889
Common questions
Is 1889 a prime number?
Yes, 1889 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 1889?
The factors of 1889 are 1, 1889.
What is 1889 in Roman numerals?
1889 in Roman numerals is MDCCCLXXXIX.
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