12144939 has 8 divisors (see below), whose sum is σ = 16751760. Its totient is φ = 7817376.

The previous prime is 12144931. The next prime is 12144959. The reversal of 12144939 is 93944121.

12144939 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12144939 - 2³ = 12144931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12144931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69712 + ... + 69885.

It is an arithmetic number, because the mean of its divisors is an integer number (2093970).

Almost surely, 2^12144939 is an apocalyptic number.

12144939 is a deficient number, since it is larger than the sum of its proper divisors (4606821).

12144939 is a wasteful number, since it uses less digits than its factorization.

12144939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139629.

The product of its digits is 7776, while the sum is 33.

The square root of 12144939 is about 3484.9589667599. The cubic root of 12144939 is about 229.8609051859.

The spelling of 12144939 in words is "twelve million, one hundred forty-four thousand, nine hundred thirty-nine".