3443
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- yes
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3768
- Proper Divisor Sum (Aliquot Sum)
- 325
- 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
- 3120
- Möbius Function
- 1
- Radical
- 3443
- 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
- Number of nonnegative solutions to x^2 + y^2 + z^2 <= n^2.at n=18A000604
- a(n) = floor(n*phi^10), where phi is the golden ratio, A001622.at n=28A004925
- Coordination sequence T1 for Zeolite Code iRON.at n=41A009881
- G.f.: (1+x)*(1+x^3)*(1+x^5)*(1+x^7)*(1+x^9)/((1-x^2)*(1-x^4)*(1-x^6)*(1-x^8)*(1-x^10)).at n=53A014670
- a(n) is the sum of squares of the numbers in row n of array T given by A026148.at n=5A027335
- Concatenation of n and n + 9 or {n,n+9}.at n=33A032614
- Numbers with digits 3 and 4 only.at n=20A032834
- Number of proper factorizations of the numbers with a record number of proper factorizations.at n=47A033834
- Decimal part of cube root of a(n) starts with 1: first term of runs.at n=13A034127
- Conjecturally, a power of 2 written in base 3 cannot have this many 0's.at n=27A036462
- Coordination sequence T11 for Zeolite Code STT.at n=39A038429
- Base-10 palindromes that starts with 3.at n=16A043038
- Numbers n such that string 4,3 occurs in the base 10 representation of n but not of n-1.at n=38A044375
- Numbers n such that string 4,3 occurs in the base 10 representation of n but not of n+1.at n=38A044756
- Palindromes with exactly 2 prime factors (counted with multiplicity).at n=42A046328
- Palindromic composite numbers with only palindromic prime factors.at n=44A046351
- Palindromes with exactly 2 palindromic prime factors (counted with multiplicity), and no other prime factors.at n=20A046376
- Palindromes with exactly 2 distinct prime factors.at n=39A046392
- Odd numbers with exactly 2 distinct palindromic prime factors.at n=44A046404
- Palindromes with exactly 2 distinct palindromic prime factors.at n=17A046408