12591994 has 8 divisors (see below), whose sum is σ = 19709280. Its totient is φ = 6022236.

The previous prime is 12591977. The next prime is 12592001. The reversal of 12591994 is 49919521.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136824 + ... + 136915.

It is an arithmetic number, because the mean of its divisors is an integer number (2463660).

Almost surely, 2^12591994 is an apocalyptic number.

12591994 is a deficient number, since it is larger than the sum of its proper divisors (7117286).

12591994 is a wasteful number, since it uses less digits than its factorization.

12591994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273764.

The product of its digits is 29160, while the sum is 40.

The square root of 12591994 is about 3548.5199731719. The cubic root of 12591994 is about 232.6473817929.

The spelling of 12591994 in words is "twelve million, five hundred ninety-one thousand, nine hundred ninety-four".