11119
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 11120
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 11118
- Möbius Function
- -1
- Radical
- 11119
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 161
- 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
- yes
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1348
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Primes that contain digits 1 and 9 only.at n=9A020457
- Discriminants of quintic fields with 2 complex conjugates (negated).at n=12A023684
- Numbers whose maximal base-10 run length is 4.at n=18A033285
- Numbers with multiplicative digital root value 9.at n=20A034056
- Smallest n-digit prime containing only digits 1 and 9, or 0 if no such prime exists.at n=4A036936
- Numbers having four 1's in base 10.at n=12A043496
- Product of digits of n is a nonzero single-digit square.at n=46A050627
- Primes p such that p^11 reversed is also prime.at n=42A059704
- Prime numbers with odd digits in ascending order.at n=36A061244
- Primes of the form bbbbba... where a and b are digits.at n=51A062353
- Primes which yield a prime whenever a 1 is inserted anywhere in them (including at the beginning or end).at n=18A069246
- Primes with either no internal digits or all internal digits are 1.at n=50A069676
- Largest eigenvalue, rounded to the nearest integer, of a rank n matrix of 1..n^2 filled successively along rows.at n=27A072333
- If k is a number with exactly two distinct decimal digits, say a and b, neither of which is 0 (i.e., a member of A101594), define the self-complement of k, SC(k), to be the number obtained by replacing a with b and vice versa. E.g. SC(232233) = 323322. Sequence contains primes p such that SC(p) is also a prime.at n=21A083983
- Primes with at least four digits such that sum of any three_neighbor_digits is prime; first and last digits are neighbors.at n=32A086259
- Lunar fourth powers: n*n*n*n, where * is lunar multiplication.at n=19A087051
- Primes arising in A087606, or 0 if A087606(k) = 0.at n=3A087607
- Primes of the form identical digits followed by a 9.at n=7A090148
- Primes p = prime(n) such that p + sum-of-digits(p) +- 1 = prime(n+1).at n=43A090180
- Smallest prime of the form concatenation of prime(n) with itself followed by a 9, or 0 if no such prime exists.at n=4A092995