12329987 has 4 divisors (see below), whose sum is σ = 12339360. Its totient is φ = 12320616.

The previous prime is 12329963. The next prime is 12330011. The reversal of 12329987 is 78992321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (12329963) and next prime (12330011).

It is a cyclic number.

It is not a de Polignac number, because 12329987 - 2⁸ = 12329731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12329957) 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, 2312 + ... + 5477.

It is an arithmetic number, because the mean of its divisors is an integer number (3084840).

Almost surely, 2^12329987 is an apocalyptic number.

12329987 is a deficient number, since it is larger than the sum of its proper divisors (9373).

12329987 is an equidigital number, since it uses as much as digits as its factorization.

12329987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9372.

The product of its digits is 54432, while the sum is 41.

The square root of 12329987 is about 3511.4081221071. The cubic root of 12329987 is about 231.0224611631.

The spelling of 12329987 in words is "twelve million, three hundred twenty-nine thousand, nine hundred eighty-seven".