12579947 has 2 divisors, whose sum is σ = 12579948. Its totient is φ = 12579946.

The previous prime is 12579929. The next prime is 12579953. The reversal of 12579947 is 74997521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12579947 - 2¹² = 12575851 is a prime.

It is a super-3 number, since 3×12579947³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12579898 and 12579907.

It is not a weakly prime, because it can be changed into another prime (12579967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6289973 + 6289974.

It is an arithmetic number, because the mean of its divisors is an integer number (6289974).

Almost surely, 2^12579947 is an apocalyptic number.

12579947 is a deficient number, since it is larger than the sum of its proper divisors (1).

12579947 is an equidigital number, since it uses as much as digits as its factorization.

12579947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 12579947 is about 3546.8220987244. The cubic root of 12579947 is about 232.5731653957.

The spelling of 12579947 in words is "twelve million, five hundred seventy-nine thousand, nine hundred forty-seven".