Properties of the Number 1929

One Thousand Nine Hundred Twenty-Nine

Basics

Value: 1928 → 1929 → 1930

Parity: odd

Prime: No

Previous Prime: 1913

Next Prime: 1931

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 643

Divisors: 1, 3, 643, 1929

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 11110001001

Octal: 3611

Duodecimal: 1149

Hexadecimal: 789

Square: 3721041

Square Root: 43.9203825119955

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

Number of integer partitions of n whose distinct parts are connected. A304716

Smallest composite that when added to sum of prime factors reaches a prime after n iterations. A50710

Expansion of 1 + ∑_k>0 x^k^2/((1-x)(1-x²)...(1-x^2k)). A122129

Fundamental discriminants of real quadratic number fields with class number 3. A94612

Numbers where 9 outnumbers any other digit. A292449

Number of subsets S of {1,2,...,n} which contain a number that is greater than the sum of the other numbers in S. A95944

Number of unlabeled connected simple graphs with n nodes of degree 4 or less. A121941

a(n) = n*(8·n² - 5)/3. A63523

a(n) = 2ⁿ mod n². A66606

Triangle T(n, k) = T(n-1, k) + T(n-1, k-1) + (j+4)*prime(j)*T(n-2, k-1) with j=5, read by rows. A153650