12839397 has 8 divisors (see below), whose sum is σ = 17185344. Its totient is φ = 8526528.

The previous prime is 12839381. The next prime is 12839401. The reversal of 12839397 is 79393821.

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

It is not a de Polignac number, because 12839397 - 2⁴ = 12839381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12839357) 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, 7348 + ... + 8925.

It is an arithmetic number, because the mean of its divisors is an integer number (2148168).

Almost surely, 2^12839397 is an apocalyptic number.

It is an amenable number.

12839397 is a deficient number, since it is larger than the sum of its proper divisors (4345947).

12839397 is a wasteful number, since it uses less digits than its factorization.

12839397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16539.

The product of its digits is 81648, while the sum is 42.

The square root of 12839397 is about 3583.2104320009. The cubic root of 12839397 is about 234.1611680988.

The spelling of 12839397 in words is "twelve million, eight hundred thirty-nine thousand, three hundred ninety-seven".