390
The Class 390 Pendolino tilts into curves.
- Even
- Composite
Where 390 fits
Why 390 is special
Tilting let faster trains use a Victorian alignment without rebuilding it, which is cheaper than straightening a railway and produces most of the same journey time.
Factors & digit properties
- Divisors (16)
- 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
- Prime factorisation
- 2 × 3 × 5 × 13
- Digit sum
- 12
- Digital root
- 3
Representations
- Decimal
- 390
- Binary
- 110000110
- Octal
- 606
- Hexadecimal
- 186
- Roman numeral
- CCCXC
- Scientific notation
- 3.900 × 10^2
Other mathematical patterns
- Abundant number
Related numbers & connections
Tilting let the Pendolino take a Victorian alignment at speed, where the earlier fleet needed the route straightened.
View 225 →Other connections
- contrasts with225
why?
Strength 0.50, confidence "high".
Technology & computing
The British Rail Class 390 uses active tilt to permit higher speeds through curves on the West Coast Main Line without realignment of the existing route.
DocumentedTechnology & computingGeography: United KingdomPeriod: 2002–
Common questions
Is 390 a prime number?
No, 390 is not prime.
What are the factors of 390?
The factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390.
What is 390 in Roman numerals?
390 in Roman numerals is CCCXC.
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