12897843 has 8 divisors (see below), whose sum is σ = 19653888. Its totient is φ = 7370184.

The previous prime is 12897839. The next prime is 12897847. The reversal of 12897843 is 34879821.

12897843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12897839) and next prime (12897847).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12897843 - 2² = 12897839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12897795 and 12897804.

It is not an unprimeable number, because it can be changed into a prime (12897847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307071 + ... + 307112.

It is an arithmetic number, because the mean of its divisors is an integer number (2456736).

Almost surely, 2^12897843 is an apocalyptic number.

12897843 is a deficient number, since it is larger than the sum of its proper divisors (6756045).

12897843 is an equidigital number, since it uses as much as digits as its factorization.

12897843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614193.

The product of its digits is 96768, while the sum is 42.

The square root of 12897843 is about 3591.3567074297. The cubic root of 12897843 is about 234.5159373483.

The spelling of 12897843 in words is "twelve million, eight hundred ninety-seven thousand, eight hundred forty-three".