9 Number Properties & Facts

Nine

Primality

Prime Factorization of 9
32
Number of Divisors of 9
3
1, 3, 9
1, 3, 9
Is 9 Prime?
No

Trigonometry

Sine of 9
0.41211848524176
Cosecant: 2.426486643552
Cosine of 9
-0.91113026188468
Secant: -1.097537906305
Tangent of 9
-0.45231565944181
Cotangent: -2.2108454109992

Functions

Square of 9
81
9 × 9 = 81
Square Root of 9
3
32 = 9
Natural Logarithm (ln) of 9
2.1972245773362
e2.1972245773362 = 9
Decimal Logarithm (log) of 9
0.95424250943932
100.95424250943932 = 9

Sequences

Is 9 a Fibonacci Number?
No
Is 9 a Bell Number?
No
Is 9 a Catalan Number?
No
Is 9 a Factorial?
No
Is 9 a Perfect Number?
No

Translations

How do you say 9 in different languages?
Englishnine
españolnueve
françaisneuf
Deutschneun
Nederlandsnegen
русскийдевять
українськадевʼять
Tiếng Việtchín
العربيةتسعة
עבריתתשע
हिन्दीनौ
中文
日本語
한국어
češtinadevět
hrvatskidevet
slovenčinadeväť
polskidziewięć
Türkçedokuz
portuguêsnove
italianonove
svenskanio
suomiyhdeksän
norskni
Filipinosiyám
Melayusembilan
မြန်မာကိုး
Indonesiasembilan
Kiswahilitisa

Numeric Bases

9 in Binary (Base 2)
0b1001
One's Complement: 0110
Two's Complement: 0111
9 in Octal (Base 8)
011
9 in Hexadecimal (Base 16)
0x9

Miscellaneous

  • 9 is an odd number
  • 9 has 1 Significant Figures
  • The Hamming Weight of 9 is 2
  • 9 is a Hamming (Regular) Number
  • 9 is a Humble Number
  • 9 is a Polygonal (s < 13) Number: Square (3), Nonagonal (2)
  • 9 is not a Happy Number
  • 9 is not a Self Describing Number
  • 9 is a Palindrome
  • 9 is not a Münchhausen Number
  • 9 is not an Eban Number
  • 9 is a Pernicious Number
  • 9 is an Attractive Number
  • 9 is a Perfect Square
  • 9 is a Perfect Power