3279
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 21
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 5
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4376
- Proper Divisor Sum (Aliquot Sum)
- 1097
- 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
- 2184
- Möbius Function
- 1
- Radical
- 3279
- 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
- 105
- 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
- Double-bitters: only even length runs in binary expansion.at n=43A001196
- Coordination sequence T1 for Zeolite Code -ROG.at n=43A009859
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite DAC = Dachiardite Na5[Al5Si19O48].12H2O starting with a T2 atom.at n=11A019103
- a(n)-th squarefree is sum of first k squarefrees for some k.at n=49A020643
- Numbers with exactly 7 1's in their ternary expansion.at n=7A023698
- Number of distinct products ijk with 0 <= i < j < k <= n.at n=39A027429
- a(n) = (3^n - 3)/2.at n=7A029858
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 38.at n=17A031536
- Numbers whose set of base-9 digits is {3,4}.at n=28A032833
- Coordination sequence T1 for Zeolite Code ESV.at n=38A038409
- Coordination sequence T3 for Zeolite Code ESV.at n=38A038412
- Sums of 7 distinct powers of 3.at n=7A038469
- Numbers having three 4's in base 9.at n=15A043471
- Numbers k such that the string 4,3 occurs in the base 9 representation of k but not of k-1.at n=45A044290
- Numbers n such that string 7,9 occurs in the base 10 representation of n but not of n-1.at n=35A044411
- Numbers n such that string 2,7 occurs in the base 10 representation of n but not of n+1.at n=36A044740
- Numbers n such that string 7,9 occurs in the base 10 representation of n but not of n+1.at n=35A044792
- Numbers whose base-3 representation contains exactly one 0 and no 2's.at n=28A044994
- Numbers whose base-4 representation contains exactly two 0's and four 3's.at n=1A045075
- Numbers whose base-4 representation contains no 1's and exactly four 3's.at n=22A045113