949
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- yes
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1036
- Proper Divisor Sum (Aliquot Sum)
- 87
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 864
- Möbius Function
- 1
- Radical
- 949
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 36
- Smith Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Names
- German
- neunhundertneunundvierzig· ordinal: neunhundertneunundvierzigste
- English
- nine hundred forty-nine· ordinal: nine hundred forty-ninth
- Spanish
- novecientos cuarenta y nueve· ordinal: 949º
- French
- neuf cent quarante-neuf· ordinal: neuf cent quarante-neufième
- Italian
- novecentoquarantanove· ordinal: 949º
- Latin
- nongenti quadraginta novem· ordinal: 949.
- Portuguese
- novecentos e quarenta e nove· ordinal: 949º
Appears in sequences
- Flavius Josephus's sieve: Start with the natural numbers; at the k-th sieving step, remove every (k+1)-st term of the sequence remaining after the (k-1)-st sieving step; iterate.at n=34A000960
- Numerators of convergents to cube root of 3.at n=8A002354
- Divisors of 2^36 - 1.at n=57A003543
- Add 4, then reverse digits; start with 0.at n=28A003608
- P-positions in Epstein's Put or Take a Square game.at n=29A005240
- Pseudoprimes to base 3.at n=5A005935
- Add 2, then reverse digits!.at n=47A007396
- Add 7, then reverse digits.at n=52A007398
- Coordination sequence T1 for Zeolite Code STI.at n=21A008234
- Coordination sequence for tridymite, lonsdaleite, and wurtzite.at n=19A008264
- Crystal ball sequence for planar net 3.6.3.6.at n=20A008580
- Numerator of [x^(2n+1)] in the Taylor series tan(cosec(x)-cosech(x)) = x/3 +x^3/81 +949*x^5/204120 +2647*x^7/5511240+... .at n=2A013532
- Least m such that the continued fraction for sqrt(m) has period n.at n=27A013646
- Eight iterations of Reverse and Add are needed to reach a palindrome.at n=8A015988
- Expansion of (1 - x + x^4) / (1 - x)^3.at n=45A016028
- Add 4, then reverse the decimal digits; start with 10.at n=39A016082
- Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite PAU = Paulingite (K2,Ca,Na2)76[Al152Si520O1344] starting with a T1 atom.at n=4A019049
- Coordination sequence T2 for Zeolite Code CZP.at n=20A019457
- Pseudoprimes to base 8.at n=19A020137
- Pseudoprimes to base 9.at n=16A020138