12979589 has 4 divisors (see below), whose sum is σ = 14833824. Its totient is φ = 11125356.

The previous prime is 12979583. The next prime is 12979591. The reversal of 12979589 is 98597921.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98597921 = 727 ⋅135623.

It is a cyclic number.

It is not a de Polignac number, because 12979589 - 2⁴ = 12979573 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12979583) 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, 927107 + ... + 927120.

It is an arithmetic number, because the mean of its divisors is an integer number (3708456).

Almost surely, 2^12979589 is an apocalyptic number.

It is an amenable number.

12979589 is a deficient number, since it is larger than the sum of its proper divisors (1854235).

12979589 is an equidigital number, since it uses as much as digits as its factorization.

12979589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854234.

The product of its digits is 408240, while the sum is 50.

The square root of 12979589 is about 3602.7196671404. The cubic root of 12979589 is about 235.0103451006.

The spelling of 12979589 in words is "twelve million, nine hundred seventy-nine thousand, five hundred eighty-nine".