3829
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4384
- Proper Divisor Sum (Aliquot Sum)
- 555
- 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
- 3276
- Möbius Function
- 1
- Radical
- 3829
- 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
- 56
- 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
- Coordination sequence T2 for Zeolite Code APD.at n=41A008035
- Coordination sequence T2 for Zeolite Code BOG.at n=44A008050
- Number of immersions of an unoriented circle into the oriented sphere with n double points.at n=7A008987
- Number of unlabeled nonseparable (or 2-connected) graphs (or blocks) with n edges.at n=12A010355
- Pseudoprimes to base 40.at n=20A020168
- Pseudoprimes to base 41.at n=32A020169
- Strong pseudoprimes to base 41.at n=9A020267
- a(n) = least m such that if r and s in {1/1, 1/3, 1/5,..., 1/(2n-1)} satisfy r < s, then r < k/m < s for some integer k.at n=49A024819
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 52 ones.at n=2A031820
- a(n) = a(n-1) + a(floor(n/2)), a(1) = 1.at n=46A033485
- Number of ternary rooted trees with n nodes and height exactly 5.at n=15A036420
- Triangle of coefficients of generating function of ternary rooted trees of height exactly n.at n=62A036437
- a(n) = (9*n^2 + 3*n + 2)/2.at n=29A038764
- Numerators of continued fraction convergents to sqrt(909).at n=4A042756
- a(1) = 4; a(n) is smallest number >= a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime.at n=32A046254
- Smallest palindrome greater than n in bases n and n+1.at n=41A048268
- Number of positive integers <= 2^n of form x^2 + 20 y^2.at n=15A054233
- Column 6 of triangle A055907.at n=5A055912
- Numbers k such that k*2^m+1 is prime for exactly one exponent m in the range 0<=m<=k.at n=32A061155
- Composite numbers not divisible by 2 or 3 which in base 3 contain their largest proper factor as a substring.at n=9A063132