12999844 has 24 divisors (see below), whose sum is σ = 26728128. Its totient is φ = 5454240.

The previous prime is 12999799. The next prime is 12999863. The reversal of 12999844 is 44899921.

It is a junction number, because it is equal to n+sod(n) for n = 12999794 and 12999803.

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 7 ways as a sum of consecutive naturals, for example, 10792 + ... + 11935.

It is an arithmetic number, because the mean of its divisors is an integer number (1113672).

Almost surely, 2^12999844 is an apocalyptic number.

It is an amenable number.

12999844 is an abundant number, since it is smaller than the sum of its proper divisors (13728284).

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

12999844 is a wasteful number, since it uses less digits than its factorization.

12999844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22755 (or 22753 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 12999844 is about 3605.5296420914. The cubic root of 12999844 is about 235.1325282344.

The spelling of 12999844 in words is "twelve million, nine hundred ninety-nine thousand, eight hundred forty-four".