12345579 has 6 divisors (see below), whose sum is σ = 17832516. Its totient is φ = 8230380.

The previous prime is 12345577. The next prime is 12345581. The reversal of 12345579 is 97554321.

It is an interprime number because it is at equal distance from previous prime (12345577) and next prime (12345581).

It is not a de Polignac number, because 12345579 - 2¹ = 12345577 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12345577) 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 5 ways as a sum of consecutive naturals, for example, 685857 + ... + 685874.

It is an arithmetic number, because the mean of its divisors is an integer number (2972086).

Almost surely, 2^12345579 is an apocalyptic number.

12345579 is a deficient number, since it is larger than the sum of its proper divisors (5486937).

12345579 is a wasteful number, since it uses less digits than its factorization.

12345579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371737 (or 1371734 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 12345579 is about 3513.6276125964. The cubic root of 12345579 is about 231.1198006797.

The spelling of 12345579 in words is "twelve million, three hundred forty-five thousand, five hundred seventy-nine".