12144393 has 12 divisors (see below), whose sum is σ = 17707248. Its totient is φ = 8019960.

The previous prime is 12144389. The next prime is 12144403. The reversal of 12144393 is 39344121.

12144393 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12144393 - 2² = 12144389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12144313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5343 + ... + 7268.

It is an arithmetic number, because the mean of its divisors is an integer number (1475604).

Almost surely, 2^12144393 is an apocalyptic number.

It is an amenable number.

12144393 is a deficient number, since it is larger than the sum of its proper divisors (5562855).

12144393 is a wasteful number, since it uses less digits than its factorization.

12144393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12724 (or 12721 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 12144393 is about 3484.8806292325. The cubic root of 12144393 is about 229.8574605156.

The spelling of 12144393 in words is "twelve million, one hundred forty-four thousand, three hundred ninety-three".