12389442429 has 32 divisors (see below), whose sum is σ = 20342939904. Its totient is φ = 6531379200.

The previous prime is 12389442421. The next prime is 12389442431. The reversal of 12389442429 is 92424498321.

It is not a de Polignac number, because 12389442429 - 2³ = 12389442421 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12389442421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 507037 + ... + 530909.

It is an arithmetic number, because the mean of its divisors is an integer number (635716872).

Almost surely, 2^12389442429 is an apocalyptic number.

It is an amenable number.

12389442429 is a deficient number, since it is larger than the sum of its proper divisors (7953497475).

12389442429 is a wasteful number, since it uses less digits than its factorization.

12389442429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25797.

The product of its digits is 995328, while the sum is 48.

The spelling of 12389442429 in words is "twelve billion, three hundred eighty-nine million, four hundred forty-two thousand, four hundred twenty-nine".