Properties of the Number 1329

One Thousand Three Hundred Twenty-Nine

Basics

Value: 1328 → 1329 → 1330

Parity: odd

Prime: No

Previous Prime: 1327

Next Prime: 1361

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 443

Divisors: 1, 3, 443, 1329

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100110001

Octal: 2461

Duodecimal: 929

Hexadecimal: 531

Square: 1766241

Square Root: 36.45545226711637

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

Number of nonempty subsets of {1..n} whose geometric mean is an integer. A326027

a(n) = n² + 3·n - 1. A14209

Sum of first n composite numbers. A53767

Numbers that are the sum of 3 nonzero squares in 10 or more ways. A25338

Triangle T, read by rows, such that T(n,k) equals the (n-k)-th row sum of T^k, where T^k is the k-th power of T as a lower triangular matrix. A91351

Positions of occurrences of the natural numbers as a second subsequence in A100035. A100037

Number of partitions of n in which each part, with the possible exception of the largest, occurs at least twice. A116931

Numbers that are the sum of 3 nonzero squares in exactly 10 ways. A25330

Sum T(n,k) of the entries in the k-th blocks of all set partitions of [n]; triangle T(n,k), n>=1, 1<=k<=n, read by rows. A285362

a(n) = n*(11·n² - 5)/6. A4467