12189907 has 2 divisors, whose sum is σ = 12189908. Its totient is φ = 12189906.

The previous prime is 12189871. The next prime is 12189911. The reversal of 12189907 is 70998121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12189907 - 2¹⁵ = 12157139 is a prime.

It is not a weakly prime, because it can be changed into another prime (12189917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6094953 + 6094954.

It is an arithmetic number, because the mean of its divisors is an integer number (6094954).

Almost surely, 2^12189907 is an apocalyptic number.

12189907 is a deficient number, since it is larger than the sum of its proper divisors (1).

12189907 is an equidigital number, since it uses as much as digits as its factorization.

12189907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 12189907 is about 3491.4047316231. The cubic root of 12189907 is about 230.1442510348.

The spelling of 12189907 in words is "twelve million, one hundred eighty-nine thousand, nine hundred seven".