Properties of the Number 4391

Four Thousand Three Hundred Ninety-One

Basics

Value: 4390 → 4391 → 4392

Parity: odd

Prime: Yes

Previous Prime: 4373

Next Prime: 4397

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 4391

Divisors: 1, 4391

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1000100100111

Octal: 10447

Duodecimal: 265B

Hexadecimal: 1127

Square: 19280881

Square Root: 66.26462102811726

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

Primes whose base-5 representation also is the base-4 representation of a prime. A235615

Artiads: the primes p == 1 (mod 5) for which Fibonacci((p-1)/5) is divisible by p. A1583

Father primes of order 4. A136073

a(n) = (a(n-1)+a(n-2))/7^k, where 7^k is the highest power of 7 dividing a(n-1)+a(n-2). A78414

Primes p(n) for which (p(n-1) + p(n+2)) / p(n) = 2. A119381

Primes p for which exactly four bases b with 1 < b < p exist such that p is a base b Wieferich prime. A255207

Primes p such that A001175(p) = (p-1)/5. A308790

Primes p such that A001177(p) = (p-1)/5. A308798

Sum of the second largest parts in the partitions of n into 7 squarefree parts. A308959

Primes q of the form q = 10p + 1, where p is also prime. A55781