MathBabbler had a

1997number moment on 8 September 2015 and he was surprised there wasn't a nBAB for1997. MathBabbler started at SCC the fall of1997.MathBabbler Number Analyst (MBNA) output: ========================================= 1997 is a natural, whole, integer 1997 is odd 1997 proper divisors are: 1, 1997 has 1 proper divisors 1997 is deficient (sum of divisors is 1; ratio: 0.000500751) 1997 is unhappy 1997 is a Squarefree Number 1997 is prime (not composite) ...Cousin prime with 1993 ...Sexy prime with 2003 ...Twin prime with 1999 ...Truman Gerald prime with 2027 ...Pythagorean ...Left-truncatable ...Right-truncatable ...Eisenstein ...prime triplet {1993, 1997, 1999} ...prime triplet {1997, 1999, 2003} 1997 is Arithmetic (A003601) 1997 is a Lychrel Number 1997 in octal is 03715 1997 in hexadecimal is 0x7cd 1997 in binary is 11111001101 (is evil) 1997 nearest square numbers: -61...28 (1936...2025 [45]) sqrt(1997) = 44.6878 ln(1997) = 7.5994 log(1997) = 3.30038 1997 reciprocal is .00050075112669003505257886830245 1997! is inf 1997 is 635.665 Pi years 1997 is 99 score and 17 years 1997 written as a Roman numeral is MCMXCVII 1997 is 999^2 - 998^2 and 999 + 998 = 1997 1997 is a multiple of 1 & it contains a 1 (A011531)

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

**Created:** 11 September 2015 (posted 12 September 2015)

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