12391366 has 8 divisors (see below), whose sum is σ = 20016864. Its totient is φ = 5719080.

The previous prime is 12391361. The next prime is 12391369. The reversal of 12391366 is 66319321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12391361) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 238270 + ... + 238321.

It is an arithmetic number, because the mean of its divisors is an integer number (2502108).

Almost surely, 2^12391366 is an apocalyptic number.

12391366 is a deficient number, since it is larger than the sum of its proper divisors (7625498).

12391366 is a wasteful number, since it uses less digits than its factorization.

12391366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476606.

The product of its digits is 5832, while the sum is 31.

The square root of 12391366 is about 3520.1372132347. The cubic root of 12391366 is about 231.4051721140.

The spelling of 12391366 in words is "twelve million, three hundred ninety-one thousand, three hundred sixty-six".