19944812 has 6 divisors (see below), whose sum is σ = 34903428. Its totient is φ = 9972404.

The previous prime is 19944797. The next prime is 19944829. The reversal of 19944812 is 21844991.

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 as a sum of consecutive naturals, namely, 2493098 + ... + 2493105.

It is an arithmetic number, because the mean of its divisors is an integer number (5817238).

Almost surely, 2^19944812 is an apocalyptic number.

It is an amenable number.

19944812 is a deficient number, since it is larger than the sum of its proper divisors (14958616).

19944812 is a wasteful number, since it uses less digits than its factorization.

19944812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4986207 (or 4986205 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 19944812 is about 4465.9614866230. The cubic root of 19944812 is about 271.1918595260.

The spelling of 19944812 in words is "nineteen million, nine hundred forty-four thousand, eight hundred twelve".