977
+977 is the international calling code for Nepal.
- Odd
- Prime
Where 977 fits
Why 977 is special
Nepal's time zone is offset by 45 minutes rather than a whole or half hour — one of only two such offsets in the world — set relative to a mountain rather than to a capital.
977 is part of
Factors & digit properties
- Divisors (2)
- 1, 977
- Prime factorisation
- 977
- Digit sum
- 23
- Digital root
- 5
Representations
- Decimal
- 977
- Scientific notation
- 9.770 × 10^2
Roman numerals
C M L X X V I I
CMLXXVII uses the subtractive pair CM: a hundred before a thousand — a thousand minus a hundred.
Binary
1 1 1 1 0 1 0 0 0 1
1 × 512 + 1 × 256 + 1 × 128 + 1 × 64 + 0 × 32 + 1 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 1 × 1 = 977
Octal
1 7 2 1
1 × 512 + 7 × 64 + 2 × 8 + 1 × 1 = 977
Hexadecimal
3 d 1
3 × 256 + d × 16 + 1 × 1 = 977
Read as powers of two: 512 + 256 + 128 + 64 + 16 + 1 = 977.
In historical numeral systems
Egyptian
9 coils of rope, 7 hobbles, 7 strokes
9 × 100 + 7 × 10 + 7 × 1 = 977. 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), 1 corner wedge + 7 vertical wedges (units place)
16 × 60 + 17 = 977. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
sampi, then omicron, then zeta, marked as a numeral
sampi-omicron-zeta + keraia
sampi + omicron + zeta 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 ayin, then zayin
tav-tav-qof-ayin-zayin
tav (400) + tav (400) + qof (100) + ayin (70) + zayin (7) = 977, 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
Geography
+977 reaches Nepal, which also keeps one of the world's only 45-minute time offsets. The reference point is a peak near Kathmandu rather than an administrative meridian.
DocumentedGeographyGeography: Nepal
Common questions
Is 977 a prime number?
Yes, 977 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 977?
The factors of 977 are 1, 977.
What is 977 in Roman numerals?
977 in Roman numerals is CMLXXVII. CM is subtractive: a hundred before a thousand — a thousand minus a hundred. Written additively it would be DCCCCLXXVII, 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