12987958 has 8 divisors (see below), whose sum is σ = 19498752. Its totient is φ = 6488376.

The previous prime is 12987917. The next prime is 12987967. The reversal of 12987958 is 85978921.

12987958 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1291 + ... + 5257.

It is an arithmetic number, because the mean of its divisors is an integer number (2437344).

Almost surely, 2^12987958 is an apocalyptic number.

12987958 is a deficient number, since it is larger than the sum of its proper divisors (6510794).

12987958 is a wasteful number, since it uses less digits than its factorization.

12987958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5606.

The product of its digits is 362880, while the sum is 49.

The square root of 12987958 is about 3603.8809636280. The cubic root of 12987958 is about 235.0608443630.

The spelling of 12987958 in words is "twelve million, nine hundred eighty-seven thousand, nine hundred fifty-eight".