904
904L is a highly alloyed austenitic stainless steel.
- Even
- Composite
Where 904 fits
Why 904 is special
It is expensive enough that its main consumer use is watch cases, where a manufacturer wanted a corrosion claim nobody else could make.
904 is part of
Factors & digit properties
- Divisors (8)
- 1, 2, 4, 8, 113, 226, 452, 904
- Prime factorisation
- 2^3 × 113
- Digit sum
- 13
- Digital root
- 4
Representations
- Decimal
- 904
- Binary
- 1110001000
- Octal
- 1610
- Hexadecimal
- 388
- Roman numeral
- CMIV
- Scientific notation
- 9.040 × 10^2
Other mathematical patterns
- Deficient number
- Happy number
Related numbers & connections
Higher nickel, molybdenum and copper extend acid resistance well beyond what 316 offers, at a cost that limits its use.
View 316 →Technology & computing
904L contains high nickel, chromium, molybdenum and copper for resistance to sulphuric acid. Its use in watch cases is a marketing application of an alloy developed for chemical plant.
DocumentedTechnology & computingGeography: International — AISI, SAE and Aluminium Association designations
Common questions
Is 904 a prime number?
No, 904 is not prime.
What are the factors of 904?
The factors of 904 are 1, 2, 4, 8, 113, 226, 452, 904.
What is 904 in Roman numerals?
904 in Roman numerals is CMIV.
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