12144389 has 2 divisors, whose sum is σ = 12144390. Its totient is φ = 12144388.

The previous prime is 12144371. The next prime is 12144403. The reversal of 12144389 is 98344121.

It is a happy number.

12144389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11847364 + 297025 = 3442^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 12144389 - 2¹⁶ = 12078853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12144289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6072194 + 6072195.

It is an arithmetic number, because the mean of its divisors is an integer number (6072195).

Almost surely, 2^12144389 is an apocalyptic number.

It is an amenable number.

12144389 is a deficient number, since it is larger than the sum of its proper divisors (1).

12144389 is an equidigital number, since it uses as much as digits as its factorization.

12144389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 12144389 is about 3484.8800553247. The cubic root of 12144389 is about 229.8574352795.

The spelling of 12144389 in words is "twelve million, one hundred forty-four thousand, three hundred eighty-nine".