3790
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
- 8
- Divisor Sum
- 6840
- Proper Divisor Sum (Aliquot Sum)
- 3050
- 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
- 1512
- Möbius Function
- -1
- Radical
- 3790
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 175
- 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
- Number of symmetrical planar partitions of n (planar partitions (A000219) that when regarded as 3-D objects have just one symmetry plane).at n=29A000784
- Number of 3 X n binary matrices up to row and column permutations.at n=10A002727
- Coordination sequence T2 for Zeolite Code DOH.at n=38A008079
- Coordination sequence T9 for Zeolite Code EUO.at n=38A008104
- Coordination sequence T3 for Zeolite Code MFI.at n=39A008166
- Aliquot sequence starting at 276.at n=6A008892
- Coordination sequence T3 for Zeolite Code RTE.at n=42A009892
- Pseudoprimes to base 51.at n=20A020179
- a(n) = n*(19*n - 1)/2.at n=20A022276
- Numbers k such that Fibonacci(k) == 55 (mod k).at n=47A023181
- Convolution of (F(2), F(3), F(4), ...) and A001950.at n=11A023654
- a(n) = (d(n)-r(n))/2, where d = A026046 and r is the periodic sequence with fundamental period (0,1,0,1).at n=24A026047
- Number of distinct products ijk with 0 <= i,j,k <= n.at n=39A027426
- Number of partitions of n into parts not of the form 25k, 25k+4 or 25k-4. Also number of partitions with at most 3 parts of size 1 and differences between parts at distance 11 are greater than 1.at n=30A036003
- Differences of A038011.at n=9A038012
- Shifts left and divides by 2 under the XOR BINOMIAL transform (A099902).at n=11A099901
- Write the natural numbers as an infinite sequence of digits, starting at the left; a(n) is the subset (i.e., the position in this sequence of the "counting digits") of the first digit of the n-th square.at n=34A105314
- Matrix inverse of A008278, which is the reflected triangle of the Stirling numbers of 2nd kind.at n=16A106342
- Sum of primes between n and n^2.at n=13A109818
- Numbers k such that sigma(k)*k is a triangular number.at n=20A115909