12998398 has 8 divisors (see below), whose sum is σ = 22282992. Its totient is φ = 5570736.

The previous prime is 12998389. The next prime is 12998399. The reversal of 12998398 is 89389921.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12998399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464215 + ... + 464242.

It is an arithmetic number, because the mean of its divisors is an integer number (2785374).

Almost surely, 2^12998398 is an apocalyptic number.

12998398 is a deficient number, since it is larger than the sum of its proper divisors (9284594).

12998398 is an equidigital number, since it uses as much as digits as its factorization.

12998398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928466.

The product of its digits is 279936, while the sum is 49.

The square root of 12998398 is about 3605.3291111908. The cubic root of 12998398 is about 235.1238098159.

The spelling of 12998398 in words is "twelve million, nine hundred ninety-eight thousand, three hundred ninety-eight".