1389
1389 is the year of the Battle of Kosovo.
- Odd
- Composite
Where 1389 fits
Why 1389 is special
Both commanders died and the outcome was indecisive militarily. Its later role in Serbian national identity is enormous and largely constructed in the nineteenth century.
Factors & digit properties
- Divisors (4)
- 1, 3, 463, 1389
- Prime factorisation
- 3 × 463
- Digit sum
- 21
- Digital root
- 3
Representations
- Decimal
- 1389
- Binary
- 10101101101
- Octal
- 2555
- Hexadecimal
- 56d
- Roman numeral
- MCCCLXXXIX
- Scientific notation
- 1.389 × 10^3
Other mathematical patterns
- Deficient number
- Semiprime
- Lucky number (mathematical sieve)
Related numbers & connections
Kosovo in 1389 and the fall of Constantinople in 1453 are both invoked in modern Balkan politics far more than their military outcomes warrant.
View 1453 →Other connections
- is associated with1453
why?
Strength 0.50, confidence "high".
History
Kosovo in 1389 killed both leaders and settled little. Its position at the centre of Serbian national memory was substantially built five centuries later, and it was invoked directly in the 1990s.
DocumentedHistoryGeography: KosovoPeriod: 1389
Common questions
Is 1389 a prime number?
No, 1389 is not prime.
What are the factors of 1389?
The factors of 1389 are 1, 3, 463, 1389.
What is 1389 in Roman numerals?
1389 in Roman numerals is MCCCLXXXIX.
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