9303
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
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 14208
- Proper Divisor Sum (Aliquot Sum)
- 4905
- 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
- 5304
- Möbius Function
- -1
- Radical
- 9303
- 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
- 34
- 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
- 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 31.at n=36A031529
- Denominators of continued fraction convergents to sqrt(445).at n=5A041847
- Digitally balanced numbers in both bases 2 and 3.at n=33A049361
- a(n) = Sum_{d|3} phi(d)*n^(3/d).at n=21A054602
- Natural numbers written out with their digits grouped in sets of four (leading zeros omitted).at n=12A091332
- a(n) = A003085(n+1) - A116950(n).at n=4A127910
- Smith numbers of order 2.at n=39A174460
- a(n) is the sum of all distinct integers that can be produced by reversing the digits of n in any base b >= 2.at n=45A211518
- Numbers n such that a positive number m <= n exists such that n-m, n+m, and n*m are triangular numbers.at n=7A224935
- Number of ways of writing n as the sum of 7 triangular numbers.at n=32A226252
- Numbers whose trajectories under the map x -> A230625(x) never reach a prime.at n=41A288847
- a(n) = number of faces in a concertina n-cube.at n=5A300701
- Indices of primes followed by a gap (distance to next larger prime) of 42.at n=17A320719
- Numerators of convergents to 2*Pi + Dottie number (A332506).at n=8A332523
- Number of integer partitions of n with a neighborless singleton.at n=34A356235