12439432 has 16 divisors (see below), whose sum is σ = 24076800. Its totient is φ = 6018960.

The previous prime is 12439417. The next prime is 12439439. The reversal of 12439432 is 23493421.

It is a self number, because there is not a number n which added to its sum of digits gives 12439432.

It is not an unprimeable number, because it can be changed into a prime (12439439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24832 + ... + 25327.

It is an arithmetic number, because the mean of its divisors is an integer number (1504800).

Almost surely, 2^12439432 is an apocalyptic number.

It is an amenable number.

12439432 is a deficient number, since it is larger than the sum of its proper divisors (11637368).

12439432 is a wasteful number, since it uses less digits than its factorization.

12439432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50196 (or 50192 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 12439432 is about 3526.9578959778. The cubic root of 12439432 is about 231.7039922836.

The spelling of 12439432 in words is "twelve million, four hundred thirty-nine thousand, four hundred thirty-two".