Number: 9

Previous Number: 8
Next Number: 10
Absolute: 9
Sign: positive
Even or Odd: Odd
Length: 1 digit (Significant Figures, Sig Fig)
Counter: -9
Inverse: 0.11111111111111
Reverse: 9 ; Palindromic: Yes
Half: 4.5
Double: 18
Undulating: Yes
Evil or Odious: Evil
Fibonacci: No
Fibonacci Prime: No
Catalan: No
Lucas: No
Narcissistic: Yes (9) ; Previous: 8 ; Next: 153
Pell: No
Octagonal: No
Centered Octagonal: Yes (2) ; Previous: 1 ; Next: 25
Untouchable: No
AZ Alphabet Character: I
AZ Alphabet Character, Backwards: R
QWERTY Alphabet Character: O
QWERTY Alphabet Character, Backwards: K
Valid phone number (US)?: No
Valid SSN (US)?: No
Human Readable Size (Kilo: 1000): 9B
Human Readable Size (Kibi: 1024): 9B
UNIX Time Stamp: 1970-01-01 00:00:09
HTTP Status Code: Invalid
Digits in English (and NATO IPA): nine
Digits in Morse Code: ----.
Square Root: 3
Sine: 0.41211848524176
Cosine: -0.91113026188468
Tangent: -0.45231565944181
Inverse Tangent: 1.460139105621
Secant: 2.426486643552
Cosecant: -1.097537906305
Cotangent: -2.2108454109992
Inverse Cotangent: 0.68486625428383
Roman Number: IX

Number: 9


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