6383
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6888
- Proper Divisor Sum (Aliquot Sum)
- 505
- 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
- 5880
- Möbius Function
- 1
- Radical
- 6383
- 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
- 199
- Smith Number
- no
- Vampire 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
Appears in sequences
- Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite JBW = NaJ (Barrer and White) Na3[Al3Si3O12].1.5H2O starting with a T1 atom.at n=5A019023
- Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite LIO = Liottite (Ca,Na2,K2)9[Al18Si18O72] starting with a T1 atom.at n=5A019027
- a(n) = (d(n)-r(n))/2, where d = A026057 and r is the periodic sequence with fundamental period (0,0,1,0).at n=35A026058
- Numbers having period-1 7-digitized sequences.at n=39A031201
- Numbers k that, when expressed in base 6 and then interpreted in base 8, give a multiple of k.at n=15A062937
- Semiprimes p1*p2 such that p2 mod p1 = 10, with p2 > p1.at n=36A064908
- Smallest difference > 1 between d and p/d for any divisor d of the partial product p of the sequence, starting with 11.at n=8A082122
- a(n)=A069523(n)/n.at n=46A088393
- Numbers k such that A003313(k) = A003313(3*k).at n=39A116459
- Numbers n such that partition number p(n) == 14 (mod n).at n=7A121015
- Least k such that the Collatz (3x+1) iteration starting with k has "dropping time" A122437(n).at n=43A122442
- Nearest integer to the space diagonal of the smallest (measured by the longest edge) primitive (gcd(a,b,c)=1) Euler bricks (a, b, c, sqrt(a^2 + b^2), sqrt(b^2 + c^2), sqrt(a^2 + c^2) are integers). If the space diagonal is an integer then the Euler brick is called a "perfect cuboid". There are no known perfect cuboids.at n=13A141029
- Row sums of triangle defined in A113821.at n=22A160969
- Multiples of 13 whose reversal - 1 is also a multiple of 13.at n=39A166397
- Number of (w,x,y,z) with all terms in {1,...,n} and |w-x|=w+|y-z|.at n=27A212685
- Least m such that the Collatz (3x+1) iteration of m has exactly n increasing peak values.at n=18A221470
- Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..4 array extended with zeros and convolved with -1,2,-1.at n=15A222039
- Number of partitions p of n such that 3*min(p) + (number of parts of p) is not a part of p.at n=30A238543
- (p^2 - 3)/2 for odd primes p.at n=28A243887
- Expansion of Sum_{n>=0} x^n * Sum_{k=0..n} C(n,k)^2 * x^(3*k).at n=17A246883