12989318 has 4 divisors (see below), whose sum is σ = 19483980. Its totient is φ = 6494658.

The previous prime is 12989299. The next prime is 12989321. The reversal of 12989318 is 81398921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81398921 = 5881 ⋅13841.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3247328 + ... + 3247331.

It is an arithmetic number, because the mean of its divisors is an integer number (4870995).

Almost surely, 2^12989318 is an apocalyptic number.

12989318 is a deficient number, since it is larger than the sum of its proper divisors (6494662).

12989318 is an equidigital number, since it uses as much as digits as its factorization.

12989318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6494661.

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

The square root of 12989318 is about 3604.0696441662. The cubic root of 12989318 is about 235.0690486702.

The spelling of 12989318 in words is "twelve million, nine hundred eighty-nine thousand, three hundred eighteen".