12009844 has 24 divisors (see below), whose sum is σ = 26203968. Its totient is φ = 4679040.

The previous prime is 12009827. The next prime is 12009859. The reversal of 12009844 is 44890021.

12009844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19189 + ... + 19804.

It is an arithmetic number, because the mean of its divisors is an integer number (1091832).

Almost surely, 2^12009844 is an apocalyptic number.

12009844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12009844 is an abundant number, since it is smaller than the sum of its proper divisors (14194124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12009844 is a wasteful number, since it uses less digits than its factorization.

12009844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39015 (or 39013 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 12009844 is about 3465.5221828752. The cubic root of 12009844 is about 229.0054345500.

Adding to 12009844 its reverse (44890021), we get a palindrome (56899865).

The spelling of 12009844 in words is "twelve million, nine thousand, eight hundred forty-four".