4673
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 4674
- Proper Divisor Sum (Aliquot Sum)
- 1
- 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
- 4672
- Möbius Function
- -1
- Radical
- 4673
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
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
- 59
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 632
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Powers of fourth root of 5 rounded to nearest integer.at n=21A018058
- Powers of fourth root of 5 rounded up.at n=21A018059
- Numbers k such that the continued fraction for sqrt(k) has period 45.at n=12A020384
- Primes that remain prime through 2 iterations of the function f(x) = 5x + 4.at n=33A023253
- Primes that remain prime through 3 iterations of function f(x) = 5x + 4.at n=11A023284
- Primes that remain prime through 4 iterations of function f(x) = 5x + 4.at n=3A023314
- Primes such that in p^2 the parity of digits alternates.at n=33A030145
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 19.at n=1A031607
- Sums of distinct powers of 8.at n=29A033045
- Primes of form x^2+77*y^2.at n=33A033249
- Primes of form x^2+89*y^2.at n=22A033257
- Expansion of sum ( q^n / product( 1-q^k, k=1..3*n), n=0..inf ).at n=25A035295
- Positive numbers having the same set of digits in base 2 and base 8.at n=25A037413
- Coordination sequence T4 for Zeolite Code SFF.at n=45A038434
- Sums of 4 distinct powers of 8.at n=3A038486
- Recursive prime generating sequence.at n=39A039726
- Numbers having four 1's in base 8.at n=3A043428
- Coordination sequence T7 for Zeolite Code SFE.at n=45A057323
- McKay-Thompson series of class 22a for Monster.at n=20A058569
- a(n+1) = a(n) + a(n minus the number of terms of the same parity as n so far).at n=48A060729