Properties of the Number 79401

Seventy-Nine Thousand Four Hundred One

Basics

Value: 79400 → 79401 → 79402

Parity: odd

Prime: No

Previous Prime: 79399

Next Prime: 79411

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 19 × 199

Divisors: 1, 3, 7, 19, 21, 57, 133, 199, 399, 597

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011011000101001

Octal: 233051

Duodecimal: 39B49

Hexadecimal: 13629

Square: 6304518801

Square Root: 281.7818305001229

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

Triangular numbers representable as x·y+x+y such that·and y are triangular numbers, x>=y>1. A259746

Composite squarefree numbers k such that p+1 divides k-1 for any prime p dividing k. A225711

Triangular numbers representable as x·y+x+y such that·and y are triangular numbers, x>=y>0. A259745

G.f.: ∏_m>0 (1 + x^m + 2!*x^2·m + 3!*x^3·m). A289485

a(n) = 58·n² - 1. A158668

Numbers k with property that 19·k + {2,4,8,10} are two pairs of consecutive twin primes. A152926

Distinct-digit numbers that are the concatenation of m and prime(m) for some number m. A255729

Triangular numbers that are repdigits with length > 2 in some base. A274084

Triangular numbers T such that T+10 is the next prime after T. A129540

Concatenate n with n-th prime. A45532