Paul Harvey died at the age of 90. MathBabbler already had a nBAB for the number 90, but he didn't have a nBab for the numbers

`and 91. This nBAB is for the number`

89`.`

89MathBabbler Number Analyst (MBNA) output: ========================================= 89 is a natural, whole, integer 89 is odd 89 proper divisors are: 1, 89 is deficient (sum of divisors is 1) 89 is unhappy 89 is not a Harshad number 89 is prime ...Sexy prime with 83 ...Sophie Germain prime with 179 ...Pythagorean 89 is undulating 89 is a Fibonacci number 89 in octal is 0131 89 in hexadecimal is 0x59 89 in binary is 1011001 (is evil) 89 nearest square numbers: -8...11 (81...100 [10]) sqrt(89) = 9.43398 ln(89) = 4.48864 log(89) = 1.94939 89 reciprocal is .01123595505617977528089887640449 89! is 1.6508e+136 89 is 28.3296 Pi years 89 is 4 score and 9 years 89 written as a Roman numeral is LXXXIXRoad sign... US Hwy-89A.

## Update::2014.01.17

Russell Johnson, who played The Professor on Gilligan's Island, died on 16 January 2014 at the age of

89.Updated MBNA output.

89 is a natural, whole, integer 89 is odd 89 proper divisors are: 1, 89 has 1 proper divisors 89 is deficient (sum of divisors is 1; ratio: 0.011236) 89 is unhappy 89 is a Squarefree Number 89 is prime ...Sexy prime with 83 ...Sophie Germain prime with 179 ...Truman Gerald prime with 59 ...Pythagorean ...Eisenstein 89 is undulating 89 is a Fibonacci number 89 in octal is 0131 89 in hexadecimal is 0x59 89 in binary is 1011001 (is evil) 89 nearest square numbers: -8...11 (81...100 [10]) sqrt(89) = 9.43398 ln(89) = 4.48864 log(89) = 1.94939 89 reciprocal is .01123595505617977528089887640449 89 is 28.3296 Pi years 89 is 4 score and 9 years 89 written as a Roman numeral is LXXXIX 89 is 45^2 - 44^2 and 45 + 44 = 89

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

**Created:** 01 March 2009

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