12990844 has 12 divisors (see below), whose sum is σ = 22797544. Its totient is φ = 6477264.

The previous prime is 12990833. The next prime is 12990853. The reversal of 12990844 is 44809921.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 2862 + ... + 5845.

Almost surely, 2^12990844 is an apocalyptic number.

It is an amenable number.

12990844 is a deficient number, since it is larger than the sum of its proper divisors (9806700).

12990844 is a wasteful number, since it uses less digits than its factorization.

12990844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9084 (or 9082 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 12990844 is about 3604.2813430697. The cubic root of 12990844 is about 235.0782537037.

The spelling of 12990844 in words is "twelve million, nine hundred ninety thousand, eight hundred forty-four".