12558994 has 12 divisors (see below), whose sum is σ = 21914334. Its totient is φ = 5382384.

The previous prime is 12558961. The next prime is 12559003. The reversal of 12558994 is 49985521.

It can be written as a sum of positive squares in only one way, i.e., 9272025 + 3286969 = 3045^2 + 1813^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12558994.

It is an unprimeable number.

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, 63979 + ... + 64174.

Almost surely, 2^12558994 is an apocalyptic number.

12558994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12558994 is a deficient number, since it is larger than the sum of its proper divisors (9355340).

12558994 is a wasteful number, since it uses less digits than its factorization.

12558994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128169 (or 128162 counting only the distinct ones).

The product of its digits is 129600, while the sum is 43.

The square root of 12558994 is about 3543.8670968308. The cubic root of 12558994 is about 232.4439700033.

The spelling of 12558994 in words is "twelve million, five hundred fifty-eight thousand, nine hundred ninety-four".