3471
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 5040
- Proper Divisor Sum (Aliquot Sum)
- 1569
- 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
- 2112
- Möbius Function
- -1
- Radical
- 3471
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 105
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- Squares written in base 8.at n=42A002441
- Number of unrooted triangulations of a disk with one internal node and n+3 nodes on the boundary.at n=8A005503
- Super-3 Numbers (3n^3 contains substring '333' in its decimal expansion).at n=29A014569
- Powers of fifth root of 23 rounded down.at n=13A018180
- Powers of fifth root of 23 rounded to nearest integer.at n=13A018181
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly five 1's.at n=32A020441
- Numbers k such that the string 7,6 occurs in the base 9 representation of k but not of k-1.at n=46A044320
- Numbers n such that string 7,1 occurs in the base 10 representation of n but not of n-1.at n=37A044403
- Numbers n such that string 7,1 occurs in the base 10 representation of n but not of n+1.at n=37A044784
- Numbers having, in base 15, (sum of even run lengths)=(sum of odd run lengths).at n=19A044886
- a(n) = Sum_{i=0..2n} (-1)^i * T(i,2n-i), array T as in A049747.at n=43A049749
- Numbers n such that 69*2^n-1 is prime.at n=38A050560
- Concatenation of n in base 2 up to base 10 is prime, all numbers are interpreted as decimals.at n=38A054256
- Number of primes in the interval [prime(n), prime(n)^2].at n=41A054272
- The array in A059219 read by antidiagonals in 'up' direction.at n=41A059220
- The array in A059219 read by antidiagonals in the direction in which it was constructed.at n=39A059235
- Numbers n such that phi(3n+1) = sigma(n).at n=33A067233
- Numbers k such that sigma(k) = phi(k*bigomega(k)+1).at n=28A067876
- Numbers k such that sigma(k) = phi(k*omega(k)+1).at n=28A067879
- Engel expansion of Artin's constant .3739558136192022880547280543464164151116292486061500420947428...at n=8A096187