About the Number 1,949 (one thousand nine hundred forty-nine)

Wikipedia.org:

   "In 1949 Lego began producing, among other new products, an early 
    version of the now famous Lego interlocking bricks, calling them 
    Automatic Binding Bricks."
MathBabbler Number Analyst (MBNA) output:
=========================================
1949 is a natural, whole, integer
1949 is odd
1949 proper divisors are: 1,
1949 has 1 proper divisors
1949 is deficient (sum of divisors is 1; ratio: 0.000513084)
1949 is unhappy
1949 is a Squarefree Number
1949 is prime (not composite)
...Twin prime with 1951
...Truman Gerald prime with 1979
...Pythagorean
...reversible prime with 9491
...Eisenstein
1949 is Arithmetic (A003601)
1949 is the sum of 5 consecutive primes
1949 = 379 + 383 + 389 + 397 + 401
1949 in octal is 03635
1949 in hexadecimal is 0x79d
1949 in binary is 11110011101 (is evil)
1949 nearest square numbers: -13...76 (1936...2025 [45])
sqrt(1949) = 44.1475
ln(1949) = 7.57507
log(1949) = 3.28981
1949 reciprocal is .00051308363263211903540277065161
1949! is inf
1949 is 620.386 Pi years
1949 is 97 score and 9 years
1949 written as a Roman numeral is MCMXLIX
1949 is 975^2 - 974^2 and 975 + 974 = 1949
1949 is a multiple of 1 & it contains a 1 (A011531)

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 28 August 2015 (posted 29 August 2015)

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