12998386 has 4 divisors (see below), whose sum is σ = 19497582. Its totient is φ = 6499192.

The previous prime is 12998383. The next prime is 12998389. The reversal of 12998386 is 68389921.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12998383) and next prime (12998389).

It can be written as a sum of positive squares in only one way, i.e., 6922161 + 6076225 = 2631^2 + 2465^2 .

It is not an unprimeable number, because it can be changed into a prime (12998383) by changing a digit.

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, 3249595 + ... + 3249598.

Almost surely, 2^12998386 is an apocalyptic number.

12998386 is a deficient number, since it is larger than the sum of its proper divisors (6499196).

12998386 is an equidigital number, since it uses as much as digits as its factorization.

12998386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6499195.

The product of its digits is 186624, while the sum is 46.

The square root of 12998386 is about 3605.3274469873. The cubic root of 12998386 is about 235.1237374612.

The spelling of 12998386 in words is "twelve million, nine hundred ninety-eight thousand, three hundred eighty-six".