12139448 has 16 divisors (see below), whose sum is σ = 22832280. Its totient is φ = 6050848.

The previous prime is 12139447. The next prime is 12139483. The reversal of 12139448 is 84493121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12139447) 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, 590 + ... + 4962.

Almost surely, 2^12139448 is an apocalyptic number.

It is an amenable number.

12139448 is a deficient number, since it is larger than the sum of its proper divisors (10692832).

12139448 is a wasteful number, since it uses less digits than its factorization.

12139448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4726 (or 4722 counting only the distinct ones).

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

The square root of 12139448 is about 3484.1710635386. The cubic root of 12139448 is about 229.8262582026.

The spelling of 12139448 in words is "twelve million, one hundred thirty-nine thousand, four hundred forty-eight".