4867
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 5056
- Proper Divisor Sum (Aliquot Sum)
- 189
- 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
- 4680
- Möbius Function
- 1
- Radical
- 4867
- 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
- 46
- 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
- Number of 3rd-order maximal independent sets in cycle graph.at n=39A007387
- Coordination sequence T3 for Zeolite Code MOR.at n=45A008184
- Numbers having period-6 5-digitized sequences.at n=36A031190
- Lucky numbers with size of gaps equal to 14 (lower terms).at n=24A031896
- Decimal part of n-th root of a(n) starts with digit 7.at n=14A034084
- Expansion of 1/(1-x)^2/(1-x^2)/(1-x^3)/(1-x^5)/(1-x^8).at n=33A034379
- Coordination sequence T4 for Zeolite Code STT.at n=46A038417
- Numbers whose base-4 representation contains exactly four 0's and two 3's.at n=11A045083
- Triangle related to A001700 and A000302 (powers of 4).at n=51A046658
- Composite numbers k such that sigma(k + 6!) = sigma(k + 720) = sigma(k) + 720.at n=41A054984
- Composite numbers such that all divisors >1 have the same number of 1's in binary representation.at n=20A089042
- a(n) = K_3(n) = Sum_{k>=0} A090285(3,k)*2^k*binomial(n,k). a(n) = (4*n^3+30*n^2+56*n+15)/3.at n=13A090294
- Sum of largest parts (counted with multiplicity) of all partitions of n into odd parts.at n=30A092310
- Numerator of Sum_{k=1..n} 1/tau(k), where tau(k) is the number of divisors function.at n=40A104528
- Least multiple of n such that every partial concatenation followed by a 9 is prime.at n=30A105185
- Number of sets of points determined by the intersection of a line with an n X n grid of points.at n=12A119438
- Number of 12-almost primes 12ap such that 2^n < 12ap <= 2^(n+1).at n=22A120043
- (Sum of the squares of the quadratic nonresidues of prime(n)) / prime(n).at n=36A125618
- Summation of a sequence of sequential numbers containing the first term as a substring.at n=47A130720
- a(n) = a(n-1) + 8*n + 4, n > 2.at n=34A133203