10389
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 21
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 13856
- Proper Divisor Sum (Aliquot Sum)
- 3467
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 6924
- Möbius Function
- 1
- Radical
- 10389
- 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
- 148
- 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
- no
- Odd
- yes
Appears in sequences
- Position of first repeat of the opening sequence of length n occurring after the first repeat of the opening sequence of length n-1 in the Kolakoski sequence (A000002).at n=29A074300
- a(n) = 2^n+n^3.at n=13A097339
- Number of binary strings of length n with equal numbers of 00000 and 01010 substrings.at n=14A164185
- a(n) = 13*n^2 + 7*n + 1.at n=27A168240
- a(n) = the smallest number whose Spanish name contains n distinct letters of the alphabet. 2<=n<=22.at n=15A168387
- Number of n X 4 0..1 arrays with rows and columns lexicographically nondecreasing read forwards, and nonincreasing read backwards.at n=17A201371
- Numbers that match polynomials over {0,1} that have a factor containing 3 as a coefficient; see Comments.at n=22A208181
- Numbers that match polynomials over {0,1} that have a factor containing -3 as a coefficient; see Comments.at n=5A208182
- Semiprimes which have one or more occurrences of exactly five different digits.at n=17A235693
- Number of partitions p of n such that neither floor(mean(p)) nor ceiling(mean(p)) is a part.at n=40A241343
- Five-digit odd semiprimes with all digits distinct.at n=12A247948
- Numbers n such that n*2^521 - 1 is prime.at n=39A265498
- a(n) is the position of the first occurrence of n^3 in the concatenation of the positive integers in decimal representation.at n=34A290787
- Numbers k such that A003132(k^2) = A003132(k), where A003132(n) is the sum of the squares of the digits of n.at n=48A309883
- Numbers k such that the k-th and (k+1)-st primes have the same digits.at n=40A342874
- Integers k such that 2^k contains all powers of 2 not exceeding k as substrings.at n=24A372680