437
Code page 437 is the original IBM PC character set.
- Odd
- Composite
Where 437 fits
Why 437 is special
Beyond the alphabet, 437 contained box-drawing characters, card suits and smiling faces, which is why pre-graphical software could draw windows and menus out of text. Those same characters are why old files opened today show borders as strings of accented letters.
Factors & digit properties
- Divisors (4)
- 1, 19, 23, 437
- Prime factorisation
- 19 × 23
- Digit sum
- 14
- Digital root
- 5
Representations
- Decimal
- 437
- Binary
- 110110101
- Octal
- 665
- Hexadecimal
- 1b5
- Roman numeral
- CDXXXVII
- Scientific notation
- 4.370 × 10^2
Other mathematical patterns
- Deficient number
- Semiprime
Related numbers & connections
Two generations of Windows text encoding — the original IBM PC set with its box-drawing characters, and the Latin-1 extension that replaced it and still causes mojibake.
View 1252 →Numbers Around Us
- appears alongside1252
why?
Strength 0.50, confidence "high".
Technology & computing
Code page 437 included box-drawing characters, card suits and faces alongside the alphabet, which is how software drew menus and borders before graphics were standard. Those same bytes are why old text files opened today show borders as strings of accented letters.
DocumentedTechnology & computing
Common questions
Is 437 a prime number?
No, 437 is not prime.
What are the factors of 437?
The factors of 437 are 1, 19, 23, 437.
What is 437 in Roman numerals?
437 in Roman numerals is CDXXXVII.
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