12387329 has 2 divisors, whose sum is σ = 12387330. Its totient is φ = 12387328.

The previous prime is 12387313. The next prime is 12387343. The reversal of 12387329 is 92378321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7756225 + 4631104 = 2785^2 + 2152^2 .

It is a cyclic number.

It is not a de Polignac number, because 12387329 - 2⁴ = 12387313 is a prime.

It is not a weakly prime, because it can be changed into another prime (12387359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6193664 + 6193665.

It is an arithmetic number, because the mean of its divisors is an integer number (6193665).

Almost surely, 2^12387329 is an apocalyptic number.

It is an amenable number.

12387329 is a deficient number, since it is larger than the sum of its proper divisors (1).

12387329 is an equidigital number, since it uses as much as digits as its factorization.

12387329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 12387329 is about 3519.5637513760. The cubic root of 12387329 is about 231.3800394491.

The spelling of 12387329 in words is "twelve million, three hundred eighty-seven thousand, three hundred twenty-nine".