12597979 has 4 divisors (see below), whose sum is σ = 12673584. Its totient is φ = 12522376.

The previous prime is 12597971. The next prime is 12598013. The reversal of 12597979 is 97979521.

12597979 is digitally balanced in base 2, 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 an emirpimes, since its reverse is a distinct semiprime: 97979521 = 151 ⋅648871.

It is a cyclic number.

It is not a de Polignac number, because 12597979 - 2³ = 12597971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12597971) 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, 37552 + ... + 37885.

It is an arithmetic number, because the mean of its divisors is an integer number (3168396).

Almost surely, 2^12597979 is an apocalyptic number.

12597979 is a deficient number, since it is larger than the sum of its proper divisors (75605).

12597979 is an equidigital number, since it uses as much as digits as its factorization.

12597979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75604.

The product of its digits is 357210, while the sum is 49.

The square root of 12597979 is about 3549.3631823188. The cubic root of 12597979 is about 232.6842352104.

The spelling of 12597979 in words is "twelve million, five hundred ninety-seven thousand, nine hundred seventy-nine".