9411
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
- 4
- Divisor Sum
- 12552
- Proper Divisor Sum (Aliquot Sum)
- 3141
- 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
- 6272
- Möbius Function
- 1
- Radical
- 9411
- 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
- 60
- 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) = F(n+2) - 2^[ (n+1)/2 ] - 2^[ n/2 ] + 1.at n=19A005673
- Powers of fifth root of 4 rounded up.at n=33A018125
- Powers of fifth root of 8 rounded up.at n=22A018137
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 97.at n=0A031595
- Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 97.at n=0A031775
- Numbers in which all pairs of consecutive base-7 digits differ by 3.at n=35A033078
- p^2 + 2 where p is a prime.at n=24A061725
- "Floor of hypotenuse": a(n)=A104863(n)-10*A104803(n).at n=31A104864
- Terms in A061725 that are of form 3*prime.at n=11A133395
- a(n) = 4*n*(n+1) + 3.at n=48A164897
- Start with 3. If a, b in sequence, so is ab+1.at n=41A180432
- Irregular array T(n,k) of the numbers of non-extendable (complete) non-self-adjacent simple paths incorporating each of a minimal subset of nodes within a square lattice bounded by rectangles with nodal dimensions n and 7, n >= 2.at n=14A214503
- Irregular array T(n,k) of the numbers of non-extendable (complete) non-self-adjacent simple paths incorporating each of a minimal subset of nodes within a square lattice bounded by rectangles with nodal dimensions n and 4, n >= 2.at n=26A214510
- Indices where records occur in A265432.at n=35A272675
- Number of partitions of n with even minimal part and odd maximal part.at n=36A325344
- Finite cardinalities of equivalence classes of real intervals with respect to the symmetric transitive closure of R(x,y) = "x is an integer multiple of y".at n=24A328129
- Fixed points of A345352.at n=46A345362
- Semiprimes of the form k^2 + 2.at n=31A360739