12579993 has 12 divisors (see below), whose sum is σ = 18427968. Its totient is φ = 8268120.

The previous prime is 12579991. The next prime is 12580003. The reversal of 12579993 is 39997521.

It is a happy number.

It is not a de Polignac number, because 12579993 - 2¹ = 12579991 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12579991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9205 + ... + 10482.

It is an arithmetic number, because the mean of its divisors is an integer number (1535664).

Almost surely, 2^12579993 is an apocalyptic number.

It is an amenable number.

12579993 is a deficient number, since it is larger than the sum of its proper divisors (5847975).

12579993 is a wasteful number, since it uses less digits than its factorization.

12579993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19764 (or 19761 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 12579993 is about 3546.8285833967. The cubic root of 12579993 is about 232.5734488721.

The spelling of 12579993 in words is "twelve million, five hundred seventy-nine thousand, nine hundred ninety-three".