12199864 has 16 divisors (see below), whose sum is σ = 23613120. Its totient is φ = 5903040.

The previous prime is 12199861. The next prime is 12199879. The reversal of 12199864 is 46899121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12199861) 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, 24349 + ... + 24844.

It is an arithmetic number, because the mean of its divisors is an integer number (1475820).

Almost surely, 2^12199864 is an apocalyptic number.

It is an amenable number.

12199864 is a deficient number, since it is larger than the sum of its proper divisors (11413256).

12199864 is a wasteful number, since it uses less digits than its factorization.

12199864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49230 (or 49226 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 12199864 is about 3492.8303709170. The cubic root of 12199864 is about 230.2068963764.

The spelling of 12199864 in words is "twelve million, one hundred ninety-nine thousand, eight hundred sixty-four".