4343
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4488
- Proper Divisor Sum (Aliquot Sum)
- 145
- 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
- 4200
- Möbius Function
- 1
- Radical
- 4343
- 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
- 51
- 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+1) = a(n)-th composite number, with a(0) = 1.at n=27A006508
- Doublets: base-10 representation is the juxtaposition of two identical strings.at n=42A020338
- Sum of digits in n-th term of A022482.at n=25A022487
- Related to number of irreducible stick-cutting problems.at n=17A022541
- Numbers with exactly five distinct base-8 digits.at n=35A031985
- Numbers with digits 3 and 4 only.at n=24A032834
- Multiplicity of highest weight (or singular) vectors associated with character chi_182 of Monster module.at n=38A034570
- Conjecturally, a power of 2 written in base 3 cannot have this many 0's.at n=37A036462
- Numbers having three 5's in base 9.at n=28A043475
- Numbers whose base-5 representation contains exactly two 1's and three 3's.at n=25A045243
- a(n) = Sum_{i=0..floor(n/2)} T(2i,n-2i), array T as in A048149.at n=24A049714
- Composite numbers k such that sigma(k + 6!) = sigma(k + 720) = sigma(k) + 720.at n=36A054984
- McKay-Thompson series of class 52a for Monster.at n=54A058707
- Triangle formed when the cumulative boustrophedon transform is applied to 1, 1, 1, 1, ..., read by rows from left to right.at n=25A059433
- Triangle formed when cumulative boustrophedon transform is applied to 1, 1, 1, 1, ..., read by rows in natural order.at n=23A059434
- Numbers k such that the product of the digits of k is equal to the sum of the prime factors of k, counted with multiplicity.at n=18A065774
- Numbers n such that the sum of the prime factors of n equals the product of the digits of n.at n=15A067173
- Smallest multiple of n not equal to n ending in (digits of) n.at n=42A075559
- a(n) = least positive k such that the remainder when 3^k is divided by k is n.at n=26A078457
- Main diagonal of array in A083140.at n=13A083141