21439

21439 is a five-digit number. It falls between the integers 21438 and 21440. In base 10, it is composed of the digits two, one, four, three, and nine. The digit in the ten thousands place is two, the thousands place is one, the hundreds place is four, the tens place is three, and the ones place is nine.

As an integer, 21439 has certain mathematical properties. It is an odd number, as its last digit is nine. It is not a prime number; its factors include 1, 21439, and others. For instance, it is divisible by 7, resulting in 3062.71... , indicating it is not divisible by 7. Upon further testing, 21439 is divisible by 13, yielding 1649.15... , so it is not divisible by 13. It is divisible by 17, yielding 1261.11... , so it is not divisible by 17. It is divisible by 19, yielding 1128.36... , so it is not divisible by 19. A more exhaustive prime factorization reveals that 21439 is the product of two prime numbers: 13 and 1649. Therefore, the prime factorization of 21439 is 13 × 1649.

Beyond its mathematical definition, the number 21439 may appear in various contexts, such as timestamps, codes, identifiers, or measurements. Without further context, its significance is limited to its numerical value and mathematical properties.