4383
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 6344
- Proper Divisor Sum (Aliquot Sum)
- 1961
- 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
- 2916
- Möbius Function
- 0
- Radical
- 1461
- Omega Function (Ω)
- 3
- 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
- 77
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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 that are the sum of 11 positive 7th powers.at n=23A003378
- Number of Twopins positions.at n=16A005684
- Row sums of A014621.at n=5A014622
- a(n) = n*(27*n + 1)/2.at n=18A022285
- a(n) = Sum_{0<=j<=i<=n} A027170(i, j).at n=8A027180
- 4th power of the lower triangular normalized 2nd kind Stirling matrix.at n=3A027497
- Third diagonal of A027497.at n=0A027506
- First column of A027497.at n=2A027513
- Convolution of Thue-Morse sequence A001285 with primes.at n=38A029888
- Number of days in n years (n=4 is the first leap year).at n=11A033171
- Number of days in n years (n=3 is the first leap year).at n=11A033172
- Number of days in n years (n=2 is the first leap year).at n=11A033173
- Number of days in n years (n=1 is the first leap year).at n=11A033174
- Number of partitions of n with equal number of parts congruent to each of 0 and 3 (mod 5).at n=36A035554
- Denominator of fraction equal to the continued fraction [ 3, 1, 4, 1, 5... ] (first n digits of Pi).at n=7A036254
- Coordination sequence T14 for Zeolite Code STT.at n=44A038430
- a(n) = a(n-1) + floor(a(n-2)/2) with a(0)=1, a(1)=2.at n=27A064324
- Distinct multiples of 3 such that the concatenation of a(n), a(n-1), ..., a(2), a(1), 1 is a prime and a(n) > a(n-1).at n=46A089757
- Positions of heptagonal numbers in the EKG sequence.at n=42A140810
- Binomial transform of A010054 (characteristic function of triangular numbers).at n=14A143961