12812893 has 2 divisors, whose sum is σ = 12812894. Its totient is φ = 12812892.

The previous prime is 12812861. The next prime is 12812963. The reversal of 12812893 is 39821821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9229444 + 3583449 = 3038^2 + 1893^2 .

It is a cyclic number.

It is not a de Polignac number, because 12812893 - 2⁵ = 12812861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12812993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6406446 + 6406447.

It is an arithmetic number, because the mean of its divisors is an integer number (6406447).

Almost surely, 2^12812893 is an apocalyptic number.

It is an amenable number.

12812893 is a deficient number, since it is larger than the sum of its proper divisors (1).

12812893 is an equidigital number, since it uses as much as digits as its factorization.

12812893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 34.

The square root of 12812893 is about 3579.5101620194. The cubic root of 12812893 is about 233.9999330362. Note that the first 4 decimals are identical.

The spelling of 12812893 in words is "twelve million, eight hundred twelve thousand, eight hundred ninety-three".