Properties of the Number 1399

One Thousand Three Hundred Ninety-Nine

Basics

Value: 1398 → 1399 → 1400

Parity: odd

Prime: Yes

Previous Prime: 1381

Next Prime: 1409

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 1399

Divisors: 1, 1399

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101110111

Octal: 2567

Duodecimal: 987

Hexadecimal: 577

Square: 1957201

Square Root: 37.403208418530085

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

Primes p such that 2p-1 is also prime. A5382

Number of nonempty subsets of {1,2,3,...,n} whose elements have an integer average. A51293

Coordination sequence for "pcu-i" 3D uniform tiling. A299277

Primes of the form 3·p - 2 such that p is a prime. A91180

Numbers k such that the smoothly undulating palindromic number (4·10^k-7)/33 = 121...21 is a prime (or PRP). A62209

Lower prime of a difference of 10 between consecutive primes. A31928

Number of partitions of n into parts congruent to 1 mod 3. A35382

Primes of the form 4x²-4xy+7y², with·and y nonnegative. A107006

Primes base 10 that are never primes in any smaller base b, 2<=b<10, expansions interpreted as decimal numbers. A52033

Primes of the form x² + 27y². A14752