5398
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
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 8100
- Proper Divisor Sum (Aliquot Sum)
- 2702
- 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
- 2698
- Möbius Function
- 1
- Radical
- 5398
- 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
- 67
- 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
- yes
- Odd
- no
Appears in sequences
- Numbers that are the sum of 10 positive 7th powers.at n=29A003377
- 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 72.at n=16A031570
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 46 ones.at n=12A031814
- Numbers k such that 229*2^k+1 is prime.at n=10A032491
- Sort then Add, a(1)=5.at n=11A033894
- Sort then Add, a(1)=31.at n=8A033905
- Sort then Add, a(1)=20.at n=9A033906
- Starting from generation 6 add previous and next term yielding generation 7.at n=22A048453
- Starting positions of strings of 2 3's in the decimal expansion of Pi.at n=41A050222
- Numbers k for which phi(prime(k)) is a square.at n=38A062325
- Number of partitions of n with zero crank.at n=46A064410
- Numbers n such that (prime(n)# + 4)/2 is a prime, where x# is the primorial A034386(x).at n=25A067027
- Numbers k such that the binary expansion of 3^k has the same number of 0's and 1's.at n=44A078839
- Even numbers such that all a(i) + a(j) are distinct.at n=40A080432
- a(n+3) = a(n+2) + 3a(n+1) - 2a(n); a(0) = 1, a(1) = -1, a(2)= 3.at n=15A104005
- Numbers k such that 16*k+1, 16*k+3 and 16*k+13 are primes.at n=42A123992
- Number of Dyck paths such that the sum of the peak-abscissae is n.at n=42A129528
- Number of different fixed (possibly) disconnected trominoes bounded tightly by an n X n square.at n=30A163433
- Number of binary strings of length n with equal numbers of 00110 and 11001 substrings.at n=13A164256
- Partial sums of A045542.at n=29A177955