12388444 has 36 divisors (see below), whose sum is σ = 24225264. Its totient is φ = 5513728.

The previous prime is 12388417. The next prime is 12388459. The reversal of 12388444 is 44488321.

It is a happy number.

It is a super-2 number, since 2×12388444² = 306947089482272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139152 + ... + 139240.

It is an arithmetic number, because the mean of its divisors is an integer number (672924).

Almost surely, 2^12388444 is an apocalyptic number.

It is an amenable number.

12388444 is a deficient number, since it is larger than the sum of its proper divisors (11836820).

12388444 is a wasteful number, since it uses less digits than its factorization.

12388444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 131 counting only the distinct ones).

The product of its digits is 24576, while the sum is 34.

The square root of 12388444 is about 3519.7221481248. The cubic root of 12388444 is about 231.3869815161.

The spelling of 12388444 in words is "twelve million, three hundred eighty-eight thousand, four hundred forty-four".