12578479 has 4 divisors (see below), whose sum is σ = 12591376. Its totient is φ = 12565584.

The previous prime is 12578477. The next prime is 12578497. The reversal of 12578479 is 97487521.

12578479 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 an emirpimes, since its reverse is a distinct semiprime: 97487521 = 6949 ⋅14029.

It is a cyclic number.

It is not a de Polignac number, because 12578479 - 2¹ = 12578477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12578471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4854 + ... + 6979.

It is an arithmetic number, because the mean of its divisors is an integer number (3147844).

Almost surely, 2^12578479 is an apocalyptic number.

12578479 is a deficient number, since it is larger than the sum of its proper divisors (12897).

12578479 is a wasteful number, since it uses less digits than its factorization.

12578479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12896.

The product of its digits is 141120, while the sum is 43.

The square root of 12578479 is about 3546.6151468689. The cubic root of 12578479 is about 232.5641184395.

The spelling of 12578479 in words is "twelve million, five hundred seventy-eight thousand, four hundred seventy-nine".