4465
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 5760
- Proper Divisor Sum (Aliquot Sum)
- 1295
- 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
- 3312
- Möbius Function
- -1
- Radical
- 4465
- 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
- yes
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 46
- 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
- Partial sums of (unordered) ways of making change for n cents using coins of 1, 2, 5, 10 cents.at n=48A000064
- a(n) = (n + 3)*(n^2 + 6*n + 2)/6.at n=27A005286
- Crystal ball sequence for planar net 3.6.3.6.at n=44A008580
- Odd triangular numbers.at n=47A014493
- Binomial coefficients C(n,93).at n=2A017757
- Binomial coefficients C(95,n).at n=2A017811
- Smallest triangular number that begins with n.at n=43A018855
- Pseudoprimes to base 46.at n=42A020174
- Pseudoprimes to base 48.at n=28A020176
- Pseudoprimes to base 93.at n=33A020221
- Every suffix prime and no 0 digits in base 9 (written in base 9).at n=31A024784
- (prime(n)-1)(prime(n)-3)/8.at n=41A030005
- a(n) = (prime(n)-3)*(prime(n)-5)/8.at n=42A030007
- Lucky numbers with size of gaps equal to 18 (lower terms).at n=25A031900
- a(n) = (2*n-1)*(4*n-1).at n=24A033567
- Smallest triangular number containing exactly n 4's.at n=1A036521
- Numbers having three 1's in base 9.at n=29A043459
- Numbers whose base-4 representation contains exactly two 0's and four 1's.at n=34A045027
- Partial sums of A048693.at n=8A048755
- Coordination sequence T7 for Zeolite Code SFE.at n=44A057323