12887893 has 2 divisors, whose sum is σ = 12887894. Its totient is φ = 12887892.

The previous prime is 12887873. The next prime is 12887923. The reversal of 12887893 is 39878821.

12887893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7879249 + 5008644 = 2807^2 + 2238^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12887893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12887813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6443946 + 6443947.

It is an arithmetic number, because the mean of its divisors is an integer number (6443947).

Almost surely, 2^12887893 is an apocalyptic number.

It is an amenable number.

12887893 is a deficient number, since it is larger than the sum of its proper divisors (1).

12887893 is an equidigital number, since it uses as much as digits as its factorization.

12887893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 46.

The square root of 12887893 is about 3589.9711698007. The cubic root of 12887893 is about 234.4556163093.

The spelling of 12887893 in words is "twelve million, eight hundred eighty-seven thousand, eight hundred ninety-three".