4622
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6936
- Proper Divisor Sum (Aliquot Sum)
- 2314
- 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
- 2310
- Möbius Function
- 1
- Radical
- 4622
- 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
- 152
- 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
- yes
- Odd
- no
Appears in sequences
- Numbers k such that 15*2^k - 1 is prime.at n=28A002237
- 7th-order maximal independent sets in cycle graph.at n=55A007389
- Integers that are squarefree and also the sum of first k squarefrees for some k.at n=44A013932
- Length of n-th term of A006711.at n=29A022476
- Squarefree n such that Q(sqrt(n)) has class number 5.at n=35A029705
- 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 66.at n=23A031564
- a(n) = floor(5*n^2/2).at n=43A032526
- Shifts left under transform T where Ta is (identity) DCONV a.at n=31A038046
- Coordination sequence T4 for Zeolite Code STT.at n=45A038417
- Coefficients arising in the enumeration of configurations of linear chains.at n=10A038747
- Expansion of (1-x-x^2+2*x^3) / ((1-x)*(1+x)*(1-3*x+x^2)).at n=9A038990
- Denominators of continued fraction convergents to sqrt(207).at n=9A041385
- Numbers k such that 63*2^k-1 is prime.at n=31A050557
- Number of n-celled free polyominoes with 1 hole.at n=5A057418
- Triangle T(n,k) giving number of fixed 3 X k polyominoes with n cells (n >= 3, 1<=k<=n-2).at n=50A059679
- Number of right triangles of a given area required to form successively larger squares.at n=33A060626
- Expansion of ((eta(q)eta(q^15))/(eta(q^3)eta(q^5)))^3 in powers of q.at n=45A095123
- Numbers k such that 10^k + 3*R_k + 4 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=14A102932
- Number of binary trees of weight n where leaves have positive integer weights, where the order of subtrees is insignificant. Commutative non-associative version of partitions of n.at n=11A113822
- n times n+2 gives the concatenation of two numbers m and m-9.at n=0A116226