12384209 has 2 divisors, whose sum is σ = 12384210. Its totient is φ = 12384208.

The previous prime is 12384199. The next prime is 12384241. The reversal of 12384209 is 90248321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9628609 + 2755600 = 3103^2 + 1660^2 .

It is a cyclic number.

It is not a de Polignac number, because 12384209 - 2¹² = 12380113 is a prime.

It is not a weakly prime, because it can be changed into another prime (12384269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6192104 + 6192105.

It is an arithmetic number, because the mean of its divisors is an integer number (6192105).

Almost surely, 2^12384209 is an apocalyptic number.

It is an amenable number.

12384209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12384209 is an equidigital number, since it uses as much as digits as its factorization.

12384209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 12384209 is about 3519.1204867126. The cubic root of 12384209 is about 231.3606118997.

The spelling of 12384209 in words is "twelve million, three hundred eighty-four thousand, two hundred nine".