19959244 has 6 divisors (see below), whose sum is σ = 34928684. Its totient is φ = 9979620.

The previous prime is 19959223. The next prime is 19959263. The reversal of 19959244 is 44295991.

It is a self number, because there is not a number n which added to its sum of digits gives 19959244.

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, 2494902 + ... + 2494909.

Almost surely, 2^19959244 is an apocalyptic number.

It is an amenable number.

19959244 is a deficient number, since it is larger than the sum of its proper divisors (14969440).

19959244 is a wasteful number, since it uses less digits than its factorization.

19959244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4989815 (or 4989813 counting only the distinct ones).

The product of its digits is 116640, while the sum is 43.

The square root of 19959244 is about 4467.5769719167. The cubic root of 19959244 is about 271.2572549328.

The spelling of 19959244 in words is "nineteen million, nine hundred fifty-nine thousand, two hundred forty-four".