`received the following tweet from`

@MathBabbler`on`

@wilderlab`2014.05.24`

.For the 144th day of the year: 144 is the reverse of441. The same is true of their square roots... sqrt(144)=12 and sqrt(441)=21.MathBabbler Number Analyst (MBNA) output: ========================================= 441 is a natural, whole, integer 441 is odd 441 proper divisors are: 1,3,7,9,21,49,63,147, 441 is refactorable (evenly divisable by # of divisors) 441 has 8 proper divisors 441 is deficient (sum of divisors is 300; ratio: 0.680272) 441 is unhappy 441 is not a Squarefree Number: 9,49,441, 441 is Harshad (Niven) number 441 is composite (not prime) 441 has the prime factors: 3*3*7*7 (sum=20) 441 is powerful (21^2 * 1^3) 441 in octal is 0671 441 in hexadecimal is 0x1b9 441 in binary is 110111001 (is evil) 441 nearest square numbers: 441 is square (odd square/centered octagonal) sqrt(441) = 21 ln(441) = 6.08904 log(441) = 2.64444 441 is 21^2 441 reciprocal is .00226757369614512471655328798185 441 is 140.375 Pi years 441 is 22 score and 1 year 441 written as a Roman numeral is CDXLI 441 is 221^2 - 220^2 and 221 + 220 = 441

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

**Created:** 12 June 2014

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