Properties of the Number 4445

Four Thousand Four Hundred Forty-Five

Basics

Value: 4444 → 4445 → 4446

Parity: odd

Prime: No

Previous Prime: 4441

Next Prime: 4447

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 7 × 127

Divisors: 1, 5, 7, 35, 127, 635, 889, 4445

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1000101011101

Octal: 10535

Duodecimal: 26A5

Hexadecimal: 115d

Square: 19758025

Square Root: 66.67083320313314

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

a(n) = n concatenated with n + 1. A1704

Numbers k such that the largest prime factor of k²-1 is 101. A181568

Numbers which have only digits 4 and 5 in base 10. A256290

Number of integer partitions of n whose length times maximum is a multiple of n. A326849

Numbers k such that 9^k - 2 is a prime. A128455

G.f. A(x) satisfies A(x) = 1 + x·A(x)⁵ / (1 - x·A(x)²). A365192

Partition the concatenation 1234567...of natural numbers into successive strings which are multiples of 7, all different and > 7 (0 is never taken as the most significant digit). A77300

Numbers whose decimal expansion is a concatenation of 2 consecutive increasing nonnegative numbers. A127421

Number of semi-lone-child-avoiding rooted trees with at most one distinct non-leaf branch directly under any vertex. A331933

Kaprekar triples: q such that q = x + y + z and q³ = x·10²ⁿ + y·10ⁿ + z, where z < 10ⁿ and n is the number of digits in q. q is not a power of 10 (except q=1). A6887