9446
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 14172
- Proper Divisor Sum (Aliquot Sum)
- 4726
- 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
- 4722
- Möbius Function
- 1
- Radical
- 9446
- 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
- yes
- Odd
- no
Appears in sequences
- 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 96.at n=13A031594
- Numbers k such that 297*2^k + 1 is prime.at n=21A053365
- Semiprimes with semiprime digits (digits 4, 6, 9 only).at n=27A107342
- Numbers k such that (k!-4)/4 is prime.at n=18A139199
- Expansion of g.f.: -1/(-1 + x + x^4 - x^10 + x^13 + x^14).at n=31A174578
- Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,1,0,0,0 for x=0,1,2,3,4.at n=8A197470
- T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 0,1,0,0,0 for x=0,1,2,3,4.at n=57A197475
- Number of partitions of n where the frequencies alternate in parity.at n=51A242984
- Number of Dyck paths of semilength n having exactly 3 (possibly overlapping) occurrences of the consecutive steps UDUUUDDDUD (with U=(1,1), D=(1,-1)).at n=6A243873
- Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and column sum not 2 3 6 or 7 and every diagonal and antidiagonal sum 2 3 6 or 7.at n=12A251887
- Number of complemented lattices on n nodes.at n=11A261994
- Numbers that occur only once in A155043; positions of zeros in A262505, ones in A262507.at n=16A262508
- Numbers k such that (25*10^k + 161)/3 is prime.at n=20A281110
- Expansion of Product_{k>=1} 1/(1 - x^(k*(k+1)/2))^(k*(k+1)/2).at n=27A298730
- a(n) is the smallest positive composite that cannot be expressed as the sum of any subset of earlier terms and is not a multiple of any earlier term.at n=17A330071
- Semiprimes with only semiprime digits, each appearing at least once.at n=10A349275
- Numbers k such that 1 is in the transitive closure of the map x -> A353313(x) when starting iterating from x=k.at n=40A353306
- a(n) is the side y of smallest possible length in triangles with integer sides corresponding to x=A375748(n).at n=40A375749
- Numbers k such that A380459(k) has no divisors of the form p^p, while A003415(k) has such a divisor or is 0.at n=35A380474