12398438 has 8 divisors (see below), whose sum is σ = 20028288. Its totient is φ = 5722344.

The previous prime is 12398429. The next prime is 12398467. The reversal of 12398438 is 83489321.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238406 + ... + 238457.

It is an arithmetic number, because the mean of its divisors is an integer number (2503536).

Almost surely, 2^12398438 is an apocalyptic number.

12398438 is a deficient number, since it is larger than the sum of its proper divisors (7629850).

12398438 is a wasteful number, since it uses less digits than its factorization.

12398438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476878.

The product of its digits is 41472, while the sum is 38.

The square root of 12398438 is about 3521.1415762505. The cubic root of 12398438 is about 231.4491862593.

The spelling of 12398438 in words is "twelve million, three hundred ninety-eight thousand, four hundred thirty-eight".