1419
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 2112
- Proper Divisor Sum (Aliquot Sum)
- 693
- 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
- 840
- Möbius Function
- -1
- Radical
- 1419
- 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
- 127
- 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
- Number of points of norm <= n in cubic lattice.at n=7A000605
- Witt vector *3!/3!.at n=3A006178
- Coordination sequence T2 for Zeolite Code -PAR.at n=27A009856
- a(n) = floor( n*(n-1)*(n-2)/19 ).at n=31A011901
- a(n) = 11 a(n-1) + 4 a(n-2).at n=4A015596
- Quadruples of different integers from [ 1,n ] with no common factors between pairs.at n=22A015623
- Number of 4's in all the partitions of n into distinct parts.at n=49A015739
- Number of partitions of n into distinct parts, none being 4.at n=46A015746
- Expansion of 1/((1-2*x)*(1-6*x)*(1-7*x)).at n=3A016304
- Coordination sequence T6 for Zeolite Code TER.at n=25A016438
- Powers of fourth root of 14 rounded to nearest integer.at n=11A018085
- Powers of fourth root of 14 rounded up.at n=11A018086
- Fibonacci sequence beginning 3, 8.at n=12A022121
- Number of 3's in n-th term of A022482.at n=29A022486
- Place where n-th 1 occurs in A023131.at n=31A022793
- Numbers k such that Fibonacci(k) == 89 (mod k).at n=22A023182
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = A023532, t = A001950 (upper Wythoff sequence).at n=42A024374
- Index of 10^n within the sequence of the numbers of the form 9^i*10^j.at n=51A025747
- a(n) = T(n,1) + T(n-1,2) + ...+ T(n-k+1,k), where k = floor((n+1)/2) and T is the array defined in A026098.at n=19A026103
- Numbers whose sum of divisors is palindromic.at n=48A028980