9607
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 10360
- Proper Divisor Sum (Aliquot Sum)
- 753
- 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
- 8856
- Möbius Function
- 1
- Radical
- 9607
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 122
- 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) = T(2n, n-1), T given by A026758.at n=6A026760
- Greatest number in row n of array T given by A026758.at n=14A027230
- Numbers whose square with its last digit deleted is also a square.at n=19A031149
- Numerators of continued fraction convergents to sqrt(490).at n=5A041934
- Numbers k such that k^2 is formed from two subsquares that overlap in a single digit.at n=9A048422
- a(n) = floor(A*a(n-1) + B*a(n-2) + C)/p^r, where p^r is the highest power of p dividing floor(A*a(n-1) + B*a(n-2) + C), A=1.0001, B=1.0001, C=1, p=2.at n=45A053521
- Numbers k such that k^2 contains only digits {2,4,9}.at n=10A053924
- Numbers which have more different digits than their squares.at n=43A061277
- Semiprimes p1*p2 such that p2 > p1 and p2 mod p1 = 11.at n=33A064909
- Numbers which need eleven 'Reverse and Add' steps to reach a palindrome.at n=41A065216
- Prefixing, suffixing or inserting a 9 in the number anywhere gives a prime.at n=39A069833
- Interprimes (A024675) which are of the form s*prime, s=13.at n=5A075288
- Number of increasing subsequences that can be made from the sequence of successive primes.at n=22A091956
- Consider the morphism 1->{1,2}, 2->{1,3}, 3->{1}; a(n) is the total number of '3' after n substitutions.at n=10A103685
- Whitney transform of Jacobsthal numbers.at n=10A103819
- Numbers n such that sum of n-th and (n+1)-st semiprimes is a square=q^2.at n=44A109311
- Odd interprimes divisible by 13.at n=42A124619
- Triangle read by rows in which row n lists n+1 terms, starting with n, such that the difference between successive terms is equal to n^4 - 1.at n=32A162622
- Triangle read by rows in which row n lists n terms, starting with n, such that the difference between successive terms is equal to n^4 - 1 = A123865(n).at n=25A162623
- Triangle read by rows in which row n lists n terms, starting with n^4 + n - 1, such that the difference between successive terms is equal to n^4 - 1 = A123865(n).at n=24A162624