12209387 has 2 divisors, whose sum is σ = 12209388. Its totient is φ = 12209386.

The previous prime is 12209369. The next prime is 12209423. The reversal of 12209387 is 78390221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12209387 - 2¹⁶ = 12143851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12209347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6104693 + 6104694.

It is an arithmetic number, because the mean of its divisors is an integer number (6104694).

Almost surely, 2^12209387 is an apocalyptic number.

12209387 is a deficient number, since it is larger than the sum of its proper divisors (1).

12209387 is an equidigital number, since it uses as much as digits as its factorization.

12209387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 12209387 is about 3494.1933260769. The cubic root of 12209387 is about 230.2667792873.

The spelling of 12209387 in words is "twelve million, two hundred nine thousand, three hundred eighty-seven".