12426889 has 2 divisors, whose sum is σ = 12426890. Its totient is φ = 12426888.

The previous prime is 12426853. The next prime is 12426899. The reversal of 12426889 is 98862421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12369289 + 57600 = 3517^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 12426889 - 2¹⁵ = 12394121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12426829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6213444 + 6213445.

It is an arithmetic number, because the mean of its divisors is an integer number (6213445).

Almost surely, 2^12426889 is an apocalyptic number.

It is an amenable number.

12426889 is a deficient number, since it is larger than the sum of its proper divisors (1).

12426889 is an equidigital number, since it uses as much as digits as its factorization.

12426889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 40.

The square root of 12426889 is about 3525.1792862208. The cubic root of 12426889 is about 231.6260883905.

The spelling of 12426889 in words is "twelve million, four hundred twenty-six thousand, eight hundred eighty-nine".