Properties of the Number -2397

Three Hundred Ninety-Seven

Basics

Value: -2398 → -2397 → -2396

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 17 × 47

Divisors: 1, 3, 17, 47, 51, 141, 799, 2397

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100101011101

Octal: -4535

Duodecimal: -1479

Hexadecimal: -95d

Square: 5745609

Square Root: 48.95916665957459

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

Sum of squares of the first n primes. A24450

a(n) = n² - 4. A28347

Number of nodes in regular n-gon with all diagonals drawn. A7569

Numerator of 1/4 - 1/n². A61037

Number of different products of partitions of n; number of partitions of n into prime parts (1 included); number of distinct orders of Abelian subgroups of symmetric group S_n. A34891

Numbers > 1000 such that all the substrings of length = 3 are primes (substrings with leading '0' are considered to be nonprime). A211684

a(n) = ceiling(a(n-1)*3/2) with a(1) = 1. A61419

Number of numbers whose base-3/2 expansion (see A024629) has n digits. A81848

Sum of first n semiprimes. A62198

a(n) = (2·n+5)*(2·n+1). A78371