4375
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
- 2
Divisibility
- Divisor Count
- 10
- Divisor Sum
- 6248
- Proper Divisor Sum (Aliquot Sum)
- 1873
- 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
- 3000
- Möbius Function
- 0
- Radical
- 35
- Omega Function (Ω)
- 5
- 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
- 77
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- Number of nonisomorphic connected functions with no fixed points, or proper rings with n edges.at n=10A002862
- Numbers that are the sum of 7 positive 6th powers.at n=38A003363
- Numbers that are the sum of 3 positive 7th powers.at n=7A003370
- Numbers of the form 5^i*7^j with i, j >= 0.at n=16A003595
- Numbers that are the sum of at most 3 positive 7th powers.at n=17A004865
- Numbers that are the sum of at most 4 positive 7th powers.at n=26A004866
- Numbers that are the sum of at most 5 positive 7th powers.at n=37A004867
- a(n) = 7*5^n.at n=4A005055
- Discriminants of period polynomials.at n=1A006312
- Positions where A007600 increases.at n=23A007601
- Coordination sequence T6 for Zeolite Code MFI.at n=42A008169
- Coordination sequence T2 for Zeolite Code STI.at n=45A008235
- a(n) = floor(binomial(n,10)/10).at n=18A011856
- Triangle of coefficients in expansion of (1+5x)^n.at n=31A013612
- Numbers k that divide s(k), where s(1)=1, s(j)=21*s(j-1)+j.at n=24A014872
- Ternary expansion uses each positive digit just once.at n=49A023741
- a(n) = least m such that if r and s in {1/2, 1/4, 1/6, ..., 1/2n} satisfy r < s, then r < k/m < (k+2)/m < s for some integer k.at n=28A024842
- a(n) = Sum_{k=1..n} k*[ (n/k)*[ n/k ] ].at n=34A024932
- Expansion of 1/((1-2x)(1-5x)(1-6x)(1-10x)).at n=3A025989
- Numbers k that divide the (right) concatenation of all numbers <= k written in base 25 (most significant digit on left).at n=44A029470