847
BWV 847 is the C minor prelude and fugue.
- Odd
- Composite
Where 847 fits
Why 847 is special
The Well-Tempered Clavier works through all twenty-four keys, which was a demonstration that a single tuning could serve them all.
847 is part of
Factors & digit properties
- Divisors (6)
- 1, 7, 11, 77, 121, 847
- Prime factorisation
- 7 × 11^2
- Digit sum
- 19
- Digital root
- 1
Representations
- Decimal
- 847
- Binary
- 1101001111
- Octal
- 1517
- Hexadecimal
- 34f
- Roman numeral
- DCCCXLVII
- Scientific notation
- 8.470 × 10^2
Other mathematical patterns
- Deficient number
- Happy number
Related numbers & connections
The first two preludes and fugues of a collection that works through all twenty-four keys.
View 846 →The Well-Tempered Clavier traverses all twenty-four major and minor keys as a demonstration of tuning.
View 24 →Media & popular culture
BWV 847 is the second prelude and fugue of the first book. The collection traverses all twenty-four major and minor keys, demonstrating the practicability of well temperament.
DocumentedMedia & popular cultureGeography: GermanyPeriod: 1722
Common questions
Is 847 a prime number?
No, 847 is not prime.
What are the factors of 847?
The factors of 847 are 1, 7, 11, 77, 121, 847.
What is 847 in Roman numerals?
847 in Roman numerals is DCCCXLVII.
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