8290
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 14940
- Proper Divisor Sum (Aliquot Sum)
- 6650
- 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
- 3312
- Möbius Function
- -1
- Radical
- 8290
- 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
- 39
- 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
- yes
- Odd
- no
Appears in sequences
- Quadruples of different integers from [ 2,n ] with no global factor.at n=22A015627
- Numbers k such that the continued fraction for sqrt(k) has period 29.at n=20A020368
- Multiplicity of highest weight (or singular) vectors associated with character chi_32 of Monster module.at n=40A034420
- Positive numbers having the same set of digits in base 7 and base 9.at n=36A037439
- McKay-Thompson series of class 17A for the Monster simple group.at n=17A058530
- Coefficients of replicable function number "32b".at n=34A058632
- Number of compositions (ordered partitions) of n into n parts, allowing zeros, with distinct nonzero parts.at n=9A097965
- Number of partitions with maximum rectangle n.at n=17A115724
- Numbers k such that the sum of the first k odd composites is palindromic in base 3.at n=5A118129
- Nonprimes n such that 5^n==5 (mod n).at n=32A122782
- Number of 132-segmented permutations of length n.at n=9A125305
- Expansion of (chi(-x) * chi(-x^19))^(-2) in powers of x where chi() is a Ramanujan theta function.at n=27A134004
- Numbers A141427(k) such that the three numbers A141427(k) -/+ 3 and A141427(k) + 1 are all prime.at n=51A144206
- 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, 0), (-1, 0, 1), (0, 0, 1), (0, 1, 0), (1, 0, -1)}.at n=8A149895
- McKay-Thompson series of class 17A for the Monster group with a(0) = 2.at n=17A152944
- Terms of A122782 which are not Carmichael numbers A002997.at n=26A153515
- Least number k > 0 such that 2^k begins with exactly n consecutive increasing digits.at n=4A244849
- T(n,k)=Number of length n+3 0..k arrays with no pair in any consecutive four terms totalling exactly k.at n=45A246479
- Number of length 1+3 0..n arrays with no pair in any consecutive four terms totalling exactly n.at n=9A246480
- Number of positive subset sums of strict integer partitions of n.at n=32A284640