Numberwise

3849

RFC 3849 reserves an IPv6 range for documentation.

1 confirmed record · 1 sourceChecked, general knowledgeHow we qualify claimsReport a correction

Where 3849 fits

Where 3849 fits: Mathematics, Related numbersMathematics: Semiprime, Lucky number (mathematical sieve). Related numbers: 5737, 4291.MathematicsSemiprimeLucky number (mathematical …Related numbers573742913849
3849 connects to 2 worlds: mathematics, related numbers.

Why 3849 is special

It is the IPv6 counterpart to the IPv4 documentation ranges, reserving 2001:db8:: for the same reason.

Factors & digit properties

Divisors (4)
1, 3, 1283, 3849
Prime factorisation
3 × 1283
Digit sum
24
Digital root
6

Representations

Decimal
3849
Scientific notation
3.849 × 10^3

Roman numerals

M M M D C C C X L I X

MMMDCCCXLIX uses the subtractive pair IX: one before ten — ten minus one.

Binary

1 1 1 1 0 0 0 0 1 0 0 1

1 × 2,048 + 1 × 1,024 + 1 × 512 + 1 × 256 + 0 × 128 + 0 × 64 + 0 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 0 × 2 + 1 × 1 = 3,849

Octal

7 4 1 1

7 × 512 + 4 × 64 + 1 × 8 + 1 × 1 = 3,849

Hexadecimal

f 0 9

f × 256 + 0 × 16 + 9 × 1 = 3,849

Read as powers of two: 2,048 + 1,024 + 512 + 256 + 8 + 1 = 3,849.

In historical numeral systems

Egyptian

3 lotuses, 8 coils of rope, 4 hobbles, 9 strokes

3 × 1,000 + 8 × 100 + 4 × 10 + 9 × 1 = 3,849. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.

Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.

Other mathematical patterns

Related numbers & connections

Documented appearance
One reserves IPv4 documentation ranges and the other the IPv6 prefix, both because examples using real addresses generated real traffic.

One reserves IPv4 documentation ranges and the other the IPv6 prefix, both because examples using real addresses generated real traffic.

View 5737 →
Connection
The documentation prefix is carved from the IPv6 address space that RFC 4291 defines.

The documentation prefix is carved from the IPv6 address space that RFC 4291 defines.

View 4291 →

Numbers Around Us

  • appears alongside5737
    why?

    Strength 0.50, confidence "high".

Other connections

  • is associated with4291
    why?

    Strength 0.50, confidence "high".

How is 3849 connected to another number? →

Technology & computing

  • RFC 3849 reserves the 2001:db8::/32 prefix for use in documentation and examples, preventing example addresses from routing to real networks.

    DocumentedTechnology & computingGeography: International — IETFPeriod: 2004

Common questions

Is 3849 a prime number?

No, 3849 is not prime.

What are the factors of 3849?

The factors of 3849 are 1, 3, 1283, 3849.

What is 3849 in Roman numerals?

3849 in Roman numerals is MMMDCCCXLIX. IX is subtractive: one before ten — ten minus one. Written additively it would be MMMDCCCXXXXVIIII, which Roman inscriptions used freely — the strict subtractive form is a later convention.

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: 15 July 2026