12352009 has 2 divisors, whose sum is σ = 12352010. Its totient is φ = 12352008.

The previous prime is 12352007. The next prime is 12352019. The reversal of 12352009 is 90025321.

12352009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10017225 + 2334784 = 3165^2 + 1528^2 .

It is a cyclic number.

It is not a de Polignac number, because 12352009 - 2¹ = 12352007 is a prime.

Together with 12352007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12352007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6176004 + 6176005.

It is an arithmetic number, because the mean of its divisors is an integer number (6176005).

Almost surely, 2^12352009 is an apocalyptic number.

It is an amenable number.

12352009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12352009 is an equidigital number, since it uses as much as digits as its factorization.

12352009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 12352009 is about 3514.5425022327. The cubic root of 12352009 is about 231.1599187492.

The spelling of 12352009 in words is "twelve million, three hundred fifty-two thousand, nine".