4071
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 12
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 5760
- Proper Divisor Sum (Aliquot Sum)
- 1689
- 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
- 2552
- Möbius Function
- -1
- Radical
- 4071
- 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
- 157
- 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
- a(n) = (n^3 + 2*n)/3.at n=23A006527
- Coordination sequence T1 for Zeolite Code AET.at n=44A008007
- Coordination sequence T2 for Zeolite Code AET.at n=44A008008
- Coordination sequence T1 for Banalsite.at n=38A008249
- Coordination sequence T2 for Banalsite.at n=38A008250
- Coordination sequence T2 for Cordierite.at n=38A008252
- Coordination sequence T1 for Zeolite Code CON.at n=45A009868
- Coordination sequence T4 for Zeolite Code CON.at n=45A009871
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MEP = Melanophlogite [Si46O92].qR starting with a T1 atom.at n=11A019157
- Pseudoprimes to base 58.at n=25A020186
- Fibonacci sequence beginning 4, 15.at n=13A022133
- Molien series for complete weight enumerator of self-dual code over GF(5).at n=28A028344
- a(n) = n-th prime number * n-th lucky number.at n=16A032601
- Divide odd numbers into groups with prime(n) elements and add together.at n=8A034960
- a(1)=1, a(2)=2, a(3)=3; for n >= 3, a(n) is smallest number such that all a(i) for 1 <= i <= n are distinct, all a(i)+a(j) for 1 <= i < j <= n are distinct and all a(i)+a(j)+a(k) for 1 <= i < j < k <= n are distinct.at n=18A036241
- Numerators of continued fraction convergents to sqrt(883).at n=5A042706
- Base-6 palindromes that start with 3.at n=19A043012
- a(n)=(s(n)+6)/10, where s(n)=n-th base 10 palindrome that starts with 4.at n=29A043083
- Numbers having three 7's in base 8.at n=18A043451
- Number of different values of i^2+j^2+k^2+l^2 for i,j,k,l in [ 0,n ].at n=35A047801