### About the Number 1109 (one thousand one hundred nine)

On 29 June 2009, the population given on the Earth, Texas, city limit sign was `1109`.

```   MathBabbler Number Analyst (MBNA) output:
=========================================
1109 is a natural, whole, integer
1109 is odd
1109 proper divisors are: 1,
1109 is deficient (sum of divisors is 1)
1109 is unhappy
1109 is not a Harshad number
1109 is prime
...Sexy prime with 1103
...Pythagorean
...Left-truncatable
...Eisenstein
1109 in octal is 02125
1109 in binary is 10001010101 (is odious)
1109 nearest square numbers: -20...47 (1089...1156 [34])
sqrt(1109) = 33.3017
ln(1109) = 7.01121
log(1109) = 3.04493
1109 reciprocal is .00090171325518485121731289449954
1109! is 1.31248e+2897
1109 is 353.006 Pi years
1109 is 55 score and 9 years
1109 written as a Roman numeral is MCIX
```

WolframAlpha.com stated the following about `1109`.

```   1109 = 22^2 + 25^       sum of two squares
1109^2 = 141^2 + 1100^  hypotenuse of a primitive Pythagorean triple
```
##### Update::2009.09.20

Solve for 'n' exercise...

```   n * 10^2 + n * 10 + n - n^0 = 1109
check w/Wolfram|Alpha
```

On 29 June 2009, the Earth city limit sign claimed that Earth's population was prime number `1109`, but populations change; however, zip codes are relatively static and Earth, Texas, has prime number zip code 79031.

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 19 September 2009