4443
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
- 5928
- Proper Divisor Sum (Aliquot Sum)
- 1485
- 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
- 2960
- Möbius Function
- 1
- Radical
- 4443
- 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
- 95
- 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
- Numerators of continued fraction convergents to sqrt(10).at n=5A005667
- Coordination sequence T3 for Zeolite Code AET.at n=46A008009
- Number of partitions of n into parts >= 4.at n=53A008484
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MTN = ZSM-39 [Si136O272].qR starting with a T2 atom.at n=11A019184
- Expansion of 1/((1-2x)(1-4x)(1-7x)(1-10x)).at n=3A025973
- 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 65.at n=17A031563
- Numbers with digits 3 and 4 only.at n=28A032834
- Number of partitions in parts not of the form 23k, 23k+3 or 23k-3. Also number of partitions with at most 2 parts of size 1 and differences between parts at distance 10 are greater than 1.at n=32A035991
- Numerators of continued fraction convergents to sqrt(250).at n=6A041468
- Base-6 palindromes that start with 3.at n=29A043012
- Numbers having three 4's in base 10.at n=15A043507
- Bessel function Y_0(n) is a monotonically decreasing positive sequence.at n=14A046961
- Bessel function |Y_0(n)| is a monotonically decreasing positive sequence.at n=22A046963
- Smallest number m such that m^2+1 is divisible by A002144(n)^2 (= squares of primes congruent to 1 mod 4).at n=27A059321
- Dimension of the space of weight n cuspidal newforms for Gamma_1( 99 ).at n=16A063372
- Arithmetic mean of largest subset of {A063676(1), ......., A063676(n-1)} such that a(n) is an integer and a(n) is maximal.at n=39A063678
- In base 2: smallest integer which requires n 'Reverse and Add' steps to reach a palindrome.at n=28A066058
- Self-conjugate digitized partition numbers.at n=14A068325
- Four-digit numbers that do not resolve to 6174 under the Kaprekar map (see A151949).at n=30A069746
- Duplicate of A005667.at n=5A084133