12398798 has 4 divisors (see below), whose sum is σ = 18598200. Its totient is φ = 6199398.

The previous prime is 12398779. The next prime is 12398803. The reversal of 12398798 is 89789321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89789321 = 743 ⋅120847.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3099698 + ... + 3099701.

It is an arithmetic number, because the mean of its divisors is an integer number (4649550).

Almost surely, 2^12398798 is an apocalyptic number.

12398798 is a deficient number, since it is larger than the sum of its proper divisors (6199402).

12398798 is an equidigital number, since it uses as much as digits as its factorization.

12398798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6199401.

The product of its digits is 217728, while the sum is 47.

The square root of 12398798 is about 3521.1926956644. The cubic root of 12398798 is about 231.4514263506.

The spelling of 12398798 in words is "twelve million, three hundred ninety-eight thousand, seven hundred ninety-eight".