Properties of the Number 3976

Three Thousand Nine Hundred Seventy-Six

Basics

Value: 3975 → 3976 → 3977

Parity: even

Prime: No

Previous Prime: 3967

Next Prime: 3989

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ³ × 7 × 71

Divisors: 1, 2, 4, 7, 8, 14, 28, 56, 71, 142

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111110001000

Octal: 7610

Duodecimal: 2374

Hexadecimal: f88

Square: 15808576

Square Root: 63.05553108173778

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) = 5·a(n-1) - 5·a(n-2) + a(n-3) with a(1) = 1 and a(k) = 0 if k <= 0. A61278

Fifth subdiagonal in array of n-gonal numbers A081422. A81436

Numbers n such that 97 is the largest prime factor of n² - 1. A181470

Pairs (j, k) of numbers j<k such that φ(j) = φ(k), σ(j) = σ(k), d(j) = d(k). A134922

a(n) = T(2·n, n-2), where T is given by A026519. A26527

Least m > 0 such that gcd(mⁿ+19, (m+1)ⁿ+19) > 1, or 0 if there is no such m. A255869

Numbers k giving rise to prime quadruples (30k+11, 30k+13, 30k+17, 30k+19). A14561

a(n) = n*(31·n + 1)/2. A22289

Number of mixed Husimi trees with n nodes; or rooted polygonal cacti with bridges. A237

a(n) = n*(2 + 5·n). A168668