Properties of the Number 3989

Three Thousand Nine Hundred Eighty-Nine

Basics

Value: 3988 → 3989 → 3990

Parity: odd

Prime: Yes

Previous Prime: 3967

Next Prime: 4001

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 3989

Divisors: 1, 3989

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111110010101

Octal: 7625

Duodecimal: 2385

Hexadecimal: f95

Square: 15912121

Square Root: 63.15853069855251

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

a(n) = ∑_k=0..n binomial(n,k)*binomial(2·k,k). A26375

Primes or negative values of primes in the sequence b(n) = 47·n² - 1701·n + 10181, n >= 0. A50267

Expansion of 1/(1-x²-2·x³). A52947

Lower prime of a difference of 12 between consecutive primes. A31930

Primes p == 1 (mod 4) such that (p-1)/4 is prime. A90866

List of different primes in Pascal-like triangles with index of asymmetry y = 2 and index of obliquity z = 0 or z = 1. A141067

a(1) = 1; a(n) is smallest number > a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime. A74336

Primes of form n² + 625. A256777

Class 5- primes (for definition see A005109). A81424

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f. exp(k·x)*BesselI(0,2·x). A292627