3199
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
- 3664
- Proper Divisor Sum (Aliquot Sum)
- 465
- 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
- 2736
- Möbius Function
- 1
- Radical
- 3199
- 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
- 167
- 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
- a(n) = n*(7*n^2 - 1)/6.at n=14A004126
- a(n)-th squarefree is sum of first k squarefrees for some k.at n=48A020643
- Numbers k such that Fib(k) == -13 (mod k).at n=14A023167
- Numbers with exactly 7 1's in their ternary expansion.at n=3A023698
- a(n) = position of n^2 + (n+1)^2 + (n+2)^2 in A000408.at n=34A024802
- Lucky numbers with size of gaps equal to 12 (upper terms).at n=36A031895
- Lucky numbers with size of gaps equal to 14 (lower terms).at n=13A031896
- "BFJ" (reversible, size, labeled) transform of 1,2,3,4...at n=7A032040
- Number of bracelets (turnover necklaces) of n beads of 2 colors, 5 of them black.at n=27A032279
- Numbers whose set of base-9 digits is {3,4}.at n=25A032833
- Sums of 7 distinct powers of 3.at n=3A038469
- Numbers whose base-7 representation contains exactly three 2's.at n=30A043403
- Numbers having three 4's in base 9.at n=7A043471
- Numbers k such that the string 4,4 occurs in the base 9 representation of k but not of k-1.at n=39A044291
- Numbers n such that string 9,9 occurs in the base 10 representation of n but not of n-1.at n=31A044431
- Numbers n such that string 1,9 occurs in the base 10 representation of n but not of n+1.at n=35A044732
- Numbers n such that string 3,1 occurs in the base 10 representation of n but not of n+1.at n=34A044744
- Numbers n such that string 9,9 occurs in the base 10 representation of n but not of n+1.at n=31A044812
- Numbers whose base-3 representation contains exactly one 0 and no 2's.at n=24A044994
- Numbers whose base-4 representation contains exactly one 0 and four 3's.at n=14A045070