12189139 has 2 divisors, whose sum is σ = 12189140. Its totient is φ = 12189138.

The previous prime is 12189097. The next prime is 12189161. The reversal of 12189139 is 93198121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12189139 - 2¹³ = 12180947 is a prime.

It is a super-2 number, since 2×12189139² = 297150219122642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12189179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6094569 + 6094570.

It is an arithmetic number, because the mean of its divisors is an integer number (6094570).

Almost surely, 2^12189139 is an apocalyptic number.

12189139 is a deficient number, since it is larger than the sum of its proper divisors (1).

12189139 is an equidigital number, since it uses as much as digits as its factorization.

12189139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 34.

The square root of 12189139 is about 3491.2947455063. The cubic root of 12189139 is about 230.1394176784.

The spelling of 12189139 in words is "twelve million, one hundred eighty-nine thousand, one hundred thirty-nine".