3079
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 3080
- Proper Divisor Sum (Aliquot Sum)
- 1
- 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
- 3078
- Möbius Function
- -1
- Radical
- 3079
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 154
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 440
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Number of partitions of n into prime parts.at n=65A000607
- Primes with 6 as smallest primitive root.at n=26A001125
- Primes of the form k^2 - k - 1.at n=31A002327
- Numbers that are the sum of 10 positive 10th powers.at n=3A004810
- Numbers that are the sum of at most 10 nonzero 10th powers.at n=37A004905
- Numbers that are the sum of at most 12 nonzero 10th powers.at n=43A004907
- Coordination sequence T1 for Zeolite Code GOO.at n=38A008111
- Coordination sequence T1 for Zeolite Code LOV.at n=37A008134
- Coordination sequence T2 for Zeolite Code -WEN.at n=40A009863
- Numbers k such that the continued fraction for sqrt(k) has period 68.at n=3A020407
- Smallest nonempty set S containing prime divisors of 7k+6 for each k in S.at n=49A020611
- Primes that remain prime through 2 iterations of function f(x) = 7x + 6.at n=39A023259
- Greatest prime divisor of prime(n)*prime(n-1) - 1.at n=28A023517
- Least odd prime divisor of prime(n)*prime(n-1) - 1, or 1 if prime(n)*prime(n-1) - 1 is a power of 2.at n=29A023519
- Sequence A025513 divided by 2.at n=33A025514
- a(n) = number of partitions of n into an odd number of parts, the least being 2; also a(n+2) = number of partitions of n into an even number of parts, each >=2.at n=42A027188
- a(n+1) = Sum_{k=0..floor(3*n/5)} a(k) * a(n-k).at n=13A030038
- a(n+1) = Sum_{k=0..floor(n/tau)} a(k) * a(n-k), where tau = (1+sqrt(5))/2.at n=13A030040
- 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 55.at n=4A031553
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 24 ones.at n=27A031792