Properties of the Number 3916

Three Thousand Nine Hundred Sixteen

Basics

Value: 3915 → 3916 → 3917

Parity: even

Prime: No

Previous Prime: 3911

Next Prime: 3917

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 11 × 89

Divisors: 1, 2, 4, 11, 22, 44, 89, 178, 356, 979

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101001100

Octal: 7514

Duodecimal: 2324

Hexadecimal: f4c

Square: 15335056

Square Root: 62.57795138864806

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

Second hexagonal numbers: a(n) = n*(2·n + 1). A14105

Centered 9-gonal (also known as nonagonal or enneagonal) numbers. Every third triangular number, starting with a(1)=1. A60544

a(n) = p*(p-1)/2 for p = prime(n). A8837

a(n) = 2·n*(4·n + 1). A33585

Twice partition numbers. A139582

Numbers m such that there are precisely 16 groups of order m. A295161

Primitive numbers in A229307. A229311

Even triangular numbers. A14494

Numbers k such that k² divides 21^k-1. A128401

Primitive numbers in A229304. A229308