Properties of the Number 1398

One Thousand Three Hundred Ninety-Eight

Basics

Value: 1397 → 1398 → 1399

Parity: even

Prime: No

Previous Prime: 1381

Next Prime: 1399

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 233

Divisors: 1, 2, 3, 6, 233, 466, 699, 1398

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101110110

Octal: 2566

Duodecimal: 986

Hexadecimal: 576

Square: 1954404

Square Root: 37.389838191679836

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

Inverse binomial matrix applied to A039599. A89942

Generalized 23-gonal (or icositrigonal) numbers: m*(21·m - 19)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A303303

Numbers k for which (10+k!)/10 is prime. A139071

Global ranks of terms of A057122: tells which terms of A014486 form rooted plane binary trees also when interpreted as codes for ordinary rooted planar trees. A57123

Position of n-th prime in A064413. A64955

Table read by downward antidiagonals: T(n,k) is the number of strictly increasing arrangements of n nonzero numbers in -(n+k-2)..(n+k-2) with sum zero. A188122

Number of isomorphism classes of 2-reductive abelian/medial quandles. A242275

Position of first appearance of each integer in A088568 (number of 1's minus number of 2's in first n terms of A000002). A288605

Poincaré series for invariant polynomial functions on the space of binary forms of degree 7. A293933