1439
1439 is the year the Council of Florence briefly reunited the eastern and western churches.
- Odd
- Prime
Where 1439 fits
Why 1439 is special
The union was signed under Byzantine political pressure and repudiated in Constantinople almost immediately. It lasted on paper for fourteen years.
1439 is part of
Factors & digit properties
- Divisors (2)
- 1, 1439
- Prime factorisation
- 1439
- Digit sum
- 17
- Digital root
- 8
Representations
- Decimal
- 1439
- Binary
- 10110011111
- Octal
- 2637
- Hexadecimal
- 59f
- Roman numeral
- MCDXXXIX
- Scientific notation
- 1.439 × 10^3
Other mathematical patterns
- Deficient number
- Sophie Germain prime
- Safe prime
Religion & belief
The 1439 reunion of the churches was agreed by a Byzantine delegation seeking military help and rejected by clergy and populace in Constantinople. The city fell fourteen years later regardless.
DocumentedReligion & beliefGeography: Florence and ConstantinoplePeriod: 1439
Common questions
Is 1439 a prime number?
Yes, 1439 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 1439?
The factors of 1439 are 1, 1439.
What is 1439 in Roman numerals?
1439 in Roman numerals is MCDXXXIX.
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