Properties of the Number 7979

Seven Thousand Nine Hundred Seventy-Nine

Basics

Value: 7978 → 7979 → 7980

Parity: odd

Prime: No

Previous Prime: 7963

Next Prime: 7993

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 79 × 101

Divisors: 1, 79, 101, 7979

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111100101011

Octal: 17453

Duodecimal: 474B

Hexadecimal: 1f2b

Square: 63664441

Square Root: 89.32524839036273

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 digits = 8 times number of digits. A61425

a(n) = n³ - n - 1. A126420

Numerators of continued fraction convergents to sqrt(53). A41090

Coefficients in the expansion of C/B², in Watson's notation of page 118. A160525

Numbers whose smallest decimal digit is 7. A284068

Numbers n such that φ(n) = φ(n+12) and n is not divisible by 2. A217141

Semiprimes whose prime factors are of equal binary length and which differ from each other in exactly three bit positions. A261075

Sequence of pairwise relatively prime numbers of class P₈ (see comment in A275246). A275253

Odd composite numbers which in base 2 contain their largest proper factor as a substring of digits. A63131

Start with 1. Successive digits in the sequence must differ by 2. Adjoin the smallest number not yet in the sequence. A228328