Properties of the Number 47189

Forty-Seven Thousand One Hundred Eighty-Nine

Basics

Value: 47188 → 47189 → 47190

Parity: odd

Prime: Yes

Previous Prime: 47161

Next Prime: 47207

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 47189

Divisors: 1, 47189

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011100001010101

Octal: 134125

Duodecimal: 23385

Hexadecimal: b855

Square: 2226801721

Square Root: 217.23029254687293

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Denominators of lower primes-only best approximates (POBAs) to e; see Comments. A265815

Primes p that have exactly three primitive roots that are not primitive roots mod p². A60519

Smallest prime factor of 2ⁿ-3. A93810

Primes that do not divide any 3-Carmichael numbers. A369777

Primes of the form n followed by the least k == 1 (mod n). A90920

Primes p such that p+2, p+4, p+6, p+8, p+10 are semiprimes. A241959

Number of length 4 0..n arrays with each partial sum starting from the beginning no more than sqrt(2) standard deviations from its mean. A244907

Numbers k such that k + 4, k + 6, k + 9, k + 10, and k + 14 are all semiprimes, where 4, 6, 9, 10, 14 are the first 5 semiprimes. A365240

Number of nonempty subsets of {1,2,...,n} in which exactly 3/5 of the elements are <= (n-2)/2. A47189