4898
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 29
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 7680
- Proper Divisor Sum (Aliquot Sum)
- 2782
- 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
- 2340
- Möbius Function
- -1
- Radical
- 4898
- 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
- 134
- 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
- Coordination sequence for FeS2-Pyrite, Fe position.at n=34A009957
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 68.at n=22A031566
- Coefficients of completely replicable function 50a with a(0) = 1.at n=53A034320
- McKay-Thompson series of class 50a for Monster.at n=53A058703
- Number of right triangles of a given area required to form successively larger squares.at n=34A060626
- a(1) = 1, a(n) = a(n - 1) + pi(a(n - 1)) + 1.at n=34A065962
- Number of heptagonal regions in regular n-gon with all diagonals drawn.at n=55A067154
- Smallest multiple of n-th prime which is == 1 mod (n+1)-st prime.at n=21A073603
- Indices of primes of the form k^2 - 11.at n=26A091273
- G.f.: Product((1+x^i)/(1-x^i),i=1..n-1)/(1-x^n), with n = 5.at n=28A091773
- (p*q - 1)/2 where p and q are consecutive odd primes.at n=23A102770
- Numbers n such that 8*10^n + 4*R_n - 3 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=13A103079
- a(n) = (p-1)! mod p^2 where p = n-th prime.at n=19A112660
- Numbers k such that the sum of the first k double factorials (1!! + 2!! + ... + k!!) is prime.at n=21A114995
- a(n) = 5*n^2 + 3*n.at n=30A126264
- a(n) integers with digit sum a(n); a(n+1) is the smallest integer > a(n).at n=20A136317
- Numbers n such that P+n is not irreducible, where P = x^8 - 8*x^6 + 20*x^4 - 16*x^2 + 2.at n=6A136362
- Arises in saturation points of a rational polyhedral cone.at n=7A138571
- Least number k such that A070635(k) = n.at n=26A138791
- Column 0 of the matrix 4th power of triangle A167015.at n=5A167144