7469
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 26
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 9408
- Proper Divisor Sum (Aliquot Sum)
- 1939
- 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
- 5760
- Möbius Function
- -1
- Radical
- 7469
- 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
- no
- Odd
- yes
Appears in sequences
- a(n) = T(n,n+2), T given by A027023.at n=12A027024
- Number of nonempty subsets of {1,2,...,n} in which exactly 5/6 of the elements are <= (n-2)/2.at n=24A047192
- Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 8.at n=37A051973
- Sum of n-th row of triangle of primes: 2; 2 3 2; 2 3 5 3 2; 2 3 5 7 5 3 2; ...; where n-th row contains 2n+1 terms.at n=43A061802
- Number of partitions of n in which number of least parts is equal to least part.at n=40A096403
- Triangle read by rows: T(n,k) is the number of ordered trees having n edges and k branches of length 1.at n=72A101276
- Let pi be an unrestricted partition of n with the summands written as binary numbers; a(n) is the number of such partitions with an even number of binary ones.at n=35A102425
- Nearest integer to the n-th root of e leading to a generalized closed form for Zeta(s).at n=21A108925
- Numbers k such that k^6+6 is prime.at n=34A109836
- Number of Fermat pseudoprimes to bases 2, 3, 5 and 7 less than 10^n.at n=11A114250
- Triangle, read by rows, where the k-th column equals the k-th self-composition of column 1 (A120567) for k>=0, such that row sums equal column 1.at n=48A120568
- Numbers k such that 2*k+1, 3*k+2 and 4*k+3 are primes.at n=34A126955
- Numbers n such that primorial(n)/2 + 16 is prime.at n=24A139443
- Odd squarefree numbers n such that the cyclotomic polynomial Phi(n,x) has height 4.at n=32A152942
- Numbers k such that 30*k and 60*k are both the average of twin prime pairs.at n=42A177679
- Number of distinct values of the sum of 5 products of three 0..n integers.at n=11A225262
- Minimum value unattainable as the sum of 2 attained values of a*b*c with a,b,c 0..n integers.at n=19A225264
- Smallest positive integer k (or 0 if no such k) with conjecturally exactly n primitive cycles of positive integers under iteration by the Collatz-like 3x+k function.at n=26A226662
- Number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 435", based on the 5-celled von Neumann neighborhood.at n=47A272149
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 517", based on the 5-celled von Neumann neighborhood.at n=19A272732