12391894 has 8 divisors (see below), whose sum is σ = 19396080. Its totient is φ = 5926536.

The previous prime is 12391867. The next prime is 12391913. The reversal of 12391894 is 49819321.

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

It is a congruent number.

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, 134649 + ... + 134740.

It is an arithmetic number, because the mean of its divisors is an integer number (2424510).

Almost surely, 2^12391894 is an apocalyptic number.

12391894 is a deficient number, since it is larger than the sum of its proper divisors (7004186).

12391894 is a wasteful number, since it uses less digits than its factorization.

12391894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269414.

The product of its digits is 15552, while the sum is 37.

The square root of 12391894 is about 3520.2122095124. The cubic root of 12391894 is about 231.4084588164.

The spelling of 12391894 in words is "twelve million, three hundred ninety-one thousand, eight hundred ninety-four".