12397998 has 32 divisors (see below), whose sum is σ = 26430624. Its totient is φ = 3863552.

The previous prime is 12397991. The next prime is 12398011. The reversal of 12397998 is 89979321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12397991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19786 + ... + 20402.

It is an arithmetic number, because the mean of its divisors is an integer number (825957).

Almost surely, 2^12397998 is an apocalyptic number.

12397998 is an abundant number, since it is smaller than the sum of its proper divisors (14032626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12397998 is a wasteful number, since it uses less digits than its factorization.

12397998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836.

The product of its digits is 244944, while the sum is 48.

The square root of 12397998 is about 3521.0790959591. The cubic root of 12397998 is about 231.4464483110.

The spelling of 12397998 in words is "twelve million, three hundred ninety-seven thousand, nine hundred ninety-eight".