12209347 has 2 divisors, whose sum is σ = 12209348. Its totient is φ = 12209346.

The previous prime is 12209341. The next prime is 12209357. The reversal of 12209347 is 74390221.

12209347 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 is an emirp because it is prime and its reverse (74390221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12209347 - 2¹⁵ = 12176579 is a prime.

It is not a weakly prime, because it can be changed into another prime (12209341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6104673 + 6104674.

It is an arithmetic number, because the mean of its divisors is an integer number (6104674).

Almost surely, 2^12209347 is an apocalyptic number.

12209347 is a deficient number, since it is larger than the sum of its proper divisors (1).

12209347 is an equidigital number, since it uses as much as digits as its factorization.

12209347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 12209347 is about 3494.1876022904. The cubic root of 12209347 is about 230.2665278228.

Adding to 12209347 its reverse (74390221), we get a palindrome (86599568).

The spelling of 12209347 in words is "twelve million, two hundred nine thousand, three hundred forty-seven".