1443
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 12
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 2128
- Proper Divisor Sum (Aliquot Sum)
- 685
- 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
- 864
- Möbius Function
- -1
- Radical
- 1443
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 47
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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) = 4*n^2 - 1.at n=19A000466
- a(n) = (4*n+1)*(4*n+3).at n=9A001539
- a(n) = n*(n+2) = (n+1)^2 - 1.at n=37A005563
- Related to representations as sums of Fibonacci numbers.at n=33A006133
- Arkons: number of elementary maps with n-1 nodes.at n=9A006343
- Coordination sequence T6 for Zeolite Code DDR.at n=24A008076
- n*prevprime(n).at n=36A013637
- Numbers k such that the periodic part of the continued fraction for sqrt(k) contains a single 1.at n=44A013648
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite NES = NU-87 H4[Al4Si64O136].nH2O starting with a T7 atom.at n=10A019208
- Pseudoprimes to base 38.at n=17A020166
- a(n) = n*(17*n + 1)/2.at n=13A022275
- Positive numbers k such that k and 2*k are anagrams in base 5 (written in base 5).at n=6A023061
- a(n) = position of n^2 + (n+1)^2 + (n+2)^2 in A004432.at n=23A024809
- Coordination sequence T4 for Zeolite Code CGS.at n=28A027368
- Triangle read by rows: square of the lower triangular mean matrix.at n=29A027446
- a(n) = (H(n) - 1)*lcm{1,...,n}, where H(n) is the n-th harmonic number.at n=7A027457
- Divisors of 999999.at n=35A027892
- Divisors of 10^12 - 1.at n=41A027897
- a(n) = floor(exp(16/23) * n!).at n=5A030813
- Numbers k such that 35*2^k+1 is prime.at n=17A032367