1499
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 1500
- 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
- 1498
- Möbius Function
- -1
- Radical
- 1499
- 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
- 47
- 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
- yes
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 239
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Number of partitions into non-integral powers.at n=19A000327
- a(n) = a(n-1) + a(n-2) + a(n-3), a(0)=3, a(1)=1, a(2)=3.at n=12A001644
- Lucasian primes: p == 3 (mod 4) with 2*p+1 prime.at n=25A002515
- Class 4- primes (for definition see A005109).at n=37A005112
- Sophie Germain primes p: 2p+1 is also prime.at n=49A005384
- a(n) = C(n+2,3) + C(n,3) + C(n-1,3).at n=14A006004
- Primes of form n^2 + n + 17.at n=30A007635
- Coordination sequence T4 for Zeolite Code LTN.at n=27A008143
- Coordination sequence T2 for Zeolite Code iRON.at n=27A009882
- Coordination sequence T4 for Zeolite Code RSN.at n=25A009888
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MFI = ZSM-5 Nan[AlnSi96-nO192] starting with a T3 atom.at n=10A019160
- Numbers k such that the continued fraction for sqrt(k) has period 46.at n=6A020385
- n-th prime p(k) such that p(k) + p(k+4) = p(k+1) + p(k+3).at n=42A022887
- Primes p such that 7*p + 8 is also prime.at n=44A023226
- Primes that remain prime through 2 iterations of function f(x) = 6x + 7.at n=28A023258
- Numbers with exactly 3 4's in base 5 expansion.at n=33A023740
- Number of partitions of n into distinct parts >= 3.at n=53A025148
- In base 11, a(n) = sum of digits of Lucas(a(n)).at n=18A025491
- Index of 7^n within the sequence of the numbers of the form 2^i*7^j.at n=32A025720
- Largest prime factor of [e*2^n].at n=26A027438