This number BAB was created on the 7th anniversity of 911 (i.e. 11 September 2001).

MathBabbler Number Analyst (MBNA) output: ========================================= 911 is a natural, whole, integer 911 is odd 911 proper divisors are: 1 911 is deficient (sum of divisors is 1) 911 is unhappy 911 is not a Harshad number 911 is prime ...Cousin prime with 907 ...Sophie Germain prime with 1823 ...OEIS:002145 (4n+3; n=227) 911 in octal is 01617 911 in hexadecimal is 0x38f 911 in binary is 1110001111 (is odious) 911 nearest square numbers: -11...50 (900 [30]...961 [31]) sqrt(911) = 30.1828 ln(911) = 6.81454 log(911) = 2.95952 911 reciprocal is .00109769484083424807903402854006 911! is 2.27959e+2302 911 is 289.98 Pi years 911 is 45 score and 11 years

`in Roman numeral is`

911`.`

CMXI

`is the emergency telephone number in the U.S.`

911

911 = (11_{2})^{2}* 10^{2}+ 10^{1}+ 10^{0}## Update::2010.01.20

MathBabbler was checking stock quotes and he saw that Google (nasdaq: GOOG) was down $9.11. 9.11 is not

`, but is centi-`

911`(i.e. 10^-2*`

911`).`

911

`[NumDic.com]`

`= 456^2 - 455^2 and 456 + 455 =`

911

911

`[exercise: solve for`

n]

9.11 = 911 / n

`[exercise: solve for`

(11]_{2})^{2}

911 = (11_{2})^{2}* 10^{2}+ 10^{1}+ 10^{0}

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 11 September 2008

This work is licensed under a Creative Commons Attribution 3.0 United States License.