964
+964 is the international calling code for Iraq.
- Even
- Composite
Where 964 fits
Why 964 is special
Iraq contains the sites of some of the earliest cities and writing systems, and its national museum was extensively looted in 2003.
964 is part of
Factors & digit properties
- Divisors (6)
- 1, 2, 4, 241, 482, 964
- Prime factorisation
- 2^2 × 241
- Digit sum
- 19
- Digital root
- 1
Representations
- Decimal
- 964
- Scientific notation
- 9.640 × 10^2
Roman numerals
C M L X I V
CMLXIV uses the subtractive pair IV: one before five — five minus one.
Binary
1 1 1 1 0 0 0 1 0 0
1 × 512 + 1 × 256 + 1 × 128 + 1 × 64 + 0 × 32 + 0 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 0 × 1 = 964
Octal
1 7 0 4
1 × 512 + 7 × 64 + 0 × 8 + 4 × 1 = 964
Hexadecimal
3 c 4
3 × 256 + c × 16 + 4 × 1 = 964
Read as powers of two: 512 + 256 + 128 + 64 + 4 = 964.
In historical numeral systems
Egyptian
9 coils of rope, 6 hobbles, 4 strokes
9 × 100 + 6 × 10 + 4 × 1 = 964. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 6 vertical wedges (sixties place), 4 vertical wedges (units place)
16 × 60 + 4 = 964. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
sampi, then xi, then delta, marked as a numeral
sampi-xi-delta + keraia
sampi + xi + delta written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
tav, then tav, then qof, then samekh, then dalet
tav-tav-qof-samekh-dalet
tav (400) + tav (400) + qof (100) + samekh (60) + dalet (4) = 964, written in descending order.
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
- Deficient number
- Happy number
Related numbers & connections
Iraq and Iran share a border and fought an eight-year war in the 1980s. Iraq contains the sites of the earliest known cities and writing.
View 98 →Geography
+964 reaches Iraq, which contains Uruk and Babylon and the earliest known writing. Its national museum lost thousands of objects to looting in 2003, some since recovered.
DocumentedGeographyGeography: Iraq
Common questions
Is 964 a prime number?
No, 964 is not prime.
What are the factors of 964?
The factors of 964 are 1, 2, 4, 241, 482, 964.
What is 964 in Roman numerals?
964 in Roman numerals is CMLXIV. IV is subtractive: one before five — five minus one. Written additively it would be DCCCCLXIIII, 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