12439798 has 8 divisors (see below), whose sum is σ = 21325392. Its totient is φ = 5331336.

The previous prime is 12439783. The next prime is 12439829. The reversal of 12439798 is 89793421.

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, 444265 + ... + 444292.

It is an arithmetic number, because the mean of its divisors is an integer number (2665674).

Almost surely, 2^12439798 is an apocalyptic number.

12439798 is a deficient number, since it is larger than the sum of its proper divisors (8885594).

12439798 is an equidigital number, since it uses as much as digits as its factorization.

12439798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888566.

The product of its digits is 108864, while the sum is 43.

The square root of 12439798 is about 3527.0097816706. The cubic root of 12439798 is about 231.7062647033.

The spelling of 12439798 in words is "twelve million, four hundred thirty-nine thousand, seven hundred ninety-eight".