12915579 has 8 divisors (see below), whose sum is σ = 17243920. Its totient is φ = 8598816.

The previous prime is 12915559. The next prime is 12915583. The reversal of 12915579 is 97551921.

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

It is not a de Polignac number, because 12915579 - 2⁸ = 12915323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12915559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177 + ... + 5085.

It is an arithmetic number, because the mean of its divisors is an integer number (2155490).

Almost surely, 2^12915579 is an apocalyptic number.

12915579 is a deficient number, since it is larger than the sum of its proper divisors (4328341).

12915579 is an equidigital number, since it uses as much as digits as its factorization.

12915579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5789.

The product of its digits is 28350, while the sum is 39.

The square root of 12915579 is about 3593.8251209540. The cubic root of 12915579 is about 234.6233834689.

The spelling of 12915579 in words is "twelve million, nine hundred fifteen thousand, five hundred seventy-nine".