12389198 has 4 divisors (see below), whose sum is σ = 18583800. Its totient is φ = 6194598.

The previous prime is 12389189. The next prime is 12389213. The reversal of 12389198 is 89198321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89198321 = 3931 ⋅22691.

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, 3097298 + ... + 3097301.

It is an arithmetic number, because the mean of its divisors is an integer number (4645950).

Almost surely, 2^12389198 is an apocalyptic number.

12389198 is a deficient number, since it is larger than the sum of its proper divisors (6194602).

12389198 is an equidigital number, since it uses as much as digits as its factorization.

12389198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6194601.

The product of its digits is 31104, while the sum is 41.

The square root of 12389198 is about 3519.8292572226. The cubic root of 12389198 is about 231.3916757361.

The spelling of 12389198 in words is "twelve million, three hundred eighty-nine thousand, one hundred ninety-eight".