12367889 has 2 divisors, whose sum is σ = 12367890. Its totient is φ = 12367888.

The previous prime is 12367877. The next prime is 12367897. The reversal of 12367889 is 98876321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7924225 + 4443664 = 2815^2 + 2108^2 .

It is a cyclic number.

It is not a de Polignac number, because 12367889 - 2²⁰ = 11319313 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (12367819) 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, 6183944 + 6183945.

It is an arithmetic number, because the mean of its divisors is an integer number (6183945).

Almost surely, 2^12367889 is an apocalyptic number.

It is an amenable number.

12367889 is a deficient number, since it is larger than the sum of its proper divisors (1).

12367889 is an equidigital number, since it uses as much as digits as its factorization.

12367889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 12367889 is about 3516.8009611009. The cubic root of 12367889 is about 231.2589376628.

The spelling of 12367889 in words is "twelve million, three hundred sixty-seven thousand, eight hundred eighty-nine".