4979
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 29
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 5376
- Proper Divisor Sum (Aliquot Sum)
- 397
- 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
- 4584
- Möbius Function
- 1
- Radical
- 4979
- 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
- 41
- 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
- Centered tetrahedral numbers.at n=19A005894
- Number of point labeled 5,6-free two-graphs with n nodes.at n=6A007832
- Expansion of (1-x^8)*(1+x^5)/(1-x^2)^5.at n=38A027635
- Expansion of (1-x^8)*(1+x^5)/(1-x^2)^5.at n=43A027635
- Numbers k such that k divides the (left) concatenation of all numbers <= k written in base 14 (most significant digit on right and removing all least significant zeros before concatenation).at n=8A029531
- Expansion of Molien series for 4-D extraspecial group 2^{1+2*2}.at n=38A030533
- a(n) = Sum_{i=0..floor(n/2)} T(2i,n-2i) where T is A049627.at n=45A049630
- a(n) = Sum_{i=0..floor(n/2)} T(2i+1,n-2i-1) where T is A049627.at n=45A049631
- a(1) = 7; a(n) is smallest number > a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime.at n=34A074343
- Right-truncatable semiprimes.at n=46A085733
- Initial terms associated with the arithmetic progressions in A086786.at n=12A087308
- Leading entries in triangle in A090548 and A113470.at n=12A090547
- Expansion of (1 - x)*(1 + 2*x) / ((1 + x)*(1 - 4*x - x^2)).at n=6A102129
- Expansion of x*(12 +101*x -189*x^2)/((1+2*x)*(1-3*x)*(1-5*x)).at n=4A120662
- a(n) integers with digit sum a(n); a(n+1) is the smallest integer > a(n).at n=21A136317
- Row sums of a Collatz triangle.at n=41A138847
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 0), (-1, 1, -1), (1, 0, -1), (1, 0, 1)}.at n=9A148535
- D-toothpick sequence of the second kind (see Comments lines for definition).at n=46A194270
- Number of partitions of n such that the number of parts is not divisible by the greatest part.at n=29A200727
- Nearest integer to 100*1.1^n.at n=41A204590