4669
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 5760
- Proper Divisor Sum (Aliquot Sum)
- 1091
- 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
- 3696
- Möbius Function
- -1
- Radical
- 4669
- 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
- 33
- 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
- Coordination sequence for FeS2-Pyrite, S position.at n=33A009956
- Number of vectors abcdefg with a,b,... >= 0, a+...+g=n, a>={b,...g}.at n=13A014073
- Number of parts in all partitions of n into distinct parts.at n=38A015723
- Powers of fifth root of 12 rounded to nearest integer.at n=17A018148
- Powers of fifth root of 12 rounded up.at n=17A018149
- (d(n)-r(n))/5, where d = A026046 and r is the periodic sequence with fundamental period (1,0,4,0,0).at n=37A026048
- Triangle read by rows: cube of the lower triangular mean matrix.at n=16A027447
- Second column of A027447.at n=4A027460
- a(n)=number of Gaussian integers z=a+bi satisfying |z|<=n+1/2.at n=38A036704
- Expansion of (1+x^2)*(1+x^5)/( Product_{j=1..7} (1-x^j) ).at n=30A060962
- Geometric mean of the digits = 6. In other words, the product of the digits is = 6^k where k is the number of digits.at n=27A061429
- Squarefree n such that the elliptic curve n*y^2 = x^3 - x arising in the "congruent number" problem has rank 3.at n=5A062693
- a(n) = C(n^2) - C(n), where C(n) is Chowla's function (A048050).at n=53A062957
- Composite numbers not divisible by 2, 3 or 5 which contain their largest prime factor as a substring in base 2.at n=33A063137
- Numbers m that divide binomial(m*(m+1), m+1)/m^2.at n=30A082529
- Number of partitions of n into nonsquares.at n=45A087153
- a(n) = (1/24) * (A018188(n)-11).at n=30A092153
- Numbers k such that (phi(k-2) + phi(k+2))/2 = phi(k); 2-phi/balanced numbers.at n=18A099633
- 3-almost primes with semiprime digits (digits 4, 6, 9 only).at n=10A111494
- a(n) = concatenation of (n times each digit of n).at n=22A111704