4307
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
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4440
- Proper Divisor Sum (Aliquot Sum)
- 133
- 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
- 4176
- Möbius Function
- 1
- Radical
- 4307
- 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
- 77
- 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
- Coordination sequence T5 for Zeolite Code PAU.at n=48A008223
- Coordination sequence T7 for Zeolite Code PAU.at n=48A008225
- Coordination sequence T2 for Zeolite Code -PAR.at n=46A009856
- Expansion of 1/(1-x^6-x^7-x^8-x^9-x^10-x^11-x^12).at n=46A017852
- a(n) = (d(n)-r(n))/2, where d = A026037 and r is the periodic sequence with fundamental period (1,0,0,1).at n=27A026038
- 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 65.at n=8A031563
- Numbers k such that the string 0,7 occurs in the base 10 representation of k but not of k-1.at n=46A044339
- Discriminants of imaginary quadratic fields with class number 18 (negated).at n=30A046015
- Upper members of a "good pair" of the form (k, 2*k +- 1).at n=31A046862
- Number of colors that can be mixed with n >= 0 units of yellow, blue, red.at n=30A048241
- n-th 6k+1 prime times n-th 6k-1 prime.at n=8A048629
- n-th 4k+1 prime times n-th 4k-1 prime.at n=8A048630
- a(n) = Sum{a(k): k=0,1,2,...,n-4,n-2,n-1}; a(n-3) is not a summand; initial terms are 0,1,4.at n=14A049860
- Composite numbers n such that sigma(n+24) = sigma(n) + 24.at n=10A054983
- Composite numbers not divisible by 2 or 3 which in base 3 contain their largest proper factor as a substring.at n=10A063132
- Composite numbers which in base 9 contain their largest proper factor as a substring.at n=3A063172
- Duplicate of A063132.at n=10A063874
- Duplicate of A063172.at n=3A063879
- a(1) = 1, a(n) = a(n - 1) + pi(a(n - 1)) + 1.at n=33A065962
- Numbers n such that [A070080(n), A070081(n), A070082(n)] is a scalene integer triangle with integer area.at n=35A070144