12958689 has 4 divisors (see below), whose sum is σ = 17278256. Its totient is φ = 8639124.

The previous prime is 12958633. The next prime is 12958691. The reversal of 12958689 is 98685921.

It is a happy number.

12958689 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12958689 - 2⁸ = 12958433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12958289) 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, 2159779 + ... + 2159784.

It is an arithmetic number, because the mean of its divisors is an integer number (4319564).

Almost surely, 2^12958689 is an apocalyptic number.

It is an amenable number.

12958689 is a deficient number, since it is larger than the sum of its proper divisors (4319567).

12958689 is an equidigital number, since it uses as much as digits as its factorization.

12958689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319566.

The product of its digits is 311040, while the sum is 48.

The square root of 12958689 is about 3599.8179120617. The cubic root of 12958689 is about 234.8841378458.

The spelling of 12958689 in words is "twelve million, nine hundred fifty-eight thousand, six hundred eighty-nine".