Properties of the Number 1400

One Thousand Four Hundred

Basics

Value: 1399 → 1400 → 1401

Parity: even

Prime: No

Previous Prime: 1399

Next Prime: 1409

Digit Sum: 5

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 5 ² × 7

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 20, 25

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10101111000

Octal: 2570

Duodecimal: 988

Hexadecimal: 578

Square: 1960000

Square Root: 37.416573867739416

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 step shifted (decimated) sequence structures using a maximum of two different symbols. A56391

Number of sum-free subsets of {1, ..., n}. A7865

Exponential Riordan array [1, 1/(2-e^x)-1]. A256893

Number of subsets of {1..n} whose mean is an integer, where {} has mean 0. A327475

a(n) = n*(n+5). A28557

Numbers whose sum of digits is 5. A52219

Multiples of 14 containing a 14 in their decimal representation. A121034

Numbers k such that k and k+1 have the same sum of unitary divisors (A034448). A64125

Number of different resistances that can be obtained by combining n one-ohm resistors. A180414

Hypotenuses for which there exist exactly 2 distinct integer triangles. A84646