Properties of the Number -1404

Four Hundred Four

Basics

Value: -1405 → -1404 → -1403

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ³ × 13

Divisors: 1, 2, 3, 4, 6, 9, 12, 13, 18, 26

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -10101111100

Octal: -2574

Duodecimal: -990

Hexadecimal: -57c

Square: 1971216

Square Root: 37.469987990390386

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

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of the Fibonacci self-fusion matrix (A202453). A202605

Expansion of φ(q) / φ(q³) in powers of q where φ() is a Ramanujan θ function. A139137

Expansion of φ(q³) / φ(q) in powers of q where φ() is a Ramanujan θ function. A132002

McKay-Thompson series of class 6D for the Monster group with a(0) = -4. A121667

Expansion of ψ(-q) / f(q³) where ψ(), f() are Ramanujan θ functions. A139136

a(n) = Pell(n)*A109041(n) for n>=1, with a(0)=1, where A109041 lists the coefficients in η(q)⁹/η(q³)³. A209453

McKay-Thompson series of class 6D for Monster. A7257

McKay-Thompson series of class 6D for Monster with a(0) = 1. A45487

Start with 1, add the next number if one gets a prime then add the next number else subtract the next... A74170

a(n) = -(A(n) - A(n-1)) where A(n) = A057597(n+1), for n >= 0. A319200