8333
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 8988
- Proper Divisor Sum (Aliquot Sum)
- 655
- 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
- 7680
- Möbius Function
- 1
- Radical
- 8333
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 127
- 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
- a(n) = floor(10^5/n).at n=11A033427
- Numbers having three 3's in base 10.at n=34A043503
- Numbers n such that 39*2^n-1 is a prime.at n=12A050545
- Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 2.at n=47A051967
- Number of partitions of n in which number of parts is not 2.at n=32A058984
- a(n) is the least odd number of the form p + k^2 with p prime and k > 0 which can be represented in exactly n different ways.at n=30A059400
- Numbers of the form (10*a + b)^2 + (10*b + a)^2 with a and b less than 10, in numerical order.at n=36A061191
- Least number which may be expressed as the sum of a prime number and a nonzero square in exactly n different ways.at n=29A064283
- A000041(n)-A000010(n).at n=31A086739
- Near-repdigit semiprimes with 3 as repeated digit.at n=20A105984
- a(n)*n = A112895(n).at n=3A112896
- Number of n-step self-avoiding walks on the upper 4 octants of the cubic grid starting at origin.at n=6A116904
- Numbers k such that k and k^2 use only the digits 3, 4, 6, 8 and 9.at n=13A137129
- a(n) = Sum of all numbers of divisors of all numbers < (n+1)^2.at n=32A168011
- Number of distinct values of the sum of i^2 over 7 realizations of i in 0..n.at n=35A225274
- Number of partitions p of n such that 2*(number of even numbers in p) > (number of odd numbers in p).at n=34A241655
- Semiprimes which are the arithmetic mean of three consecutive primes.at n=37A242218
- Smallest number such that the sum of the digits of n * a(n) is greater than n.at n=35A269333
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 446", based on the 5-celled von Neumann neighborhood.at n=25A272250
- Numbers with digits 3 and 8 only.at n=22A284963