19799884 has 48 divisors (see below), whose sum is σ = 39414816. Its totient is φ = 8640000.

The previous prime is 19799873. The next prime is 19799887. The reversal of 19799884 is 48899791.

It is not an unprimeable number, because it can be changed into a prime (19799887) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 78759 + ... + 79009.

It is an arithmetic number, because the mean of its divisors is an integer number (821142).

Almost surely, 2^19799884 is an apocalyptic number.

It is an amenable number.

19799884 is a deficient number, since it is larger than the sum of its proper divisors (19614932).

19799884 is a wasteful number, since it uses less digits than its factorization.

19799884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 344 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 55.

The square root of 19799884 is about 4449.7060577076. The cubic root of 19799884 is about 270.5333945831.

The spelling of 19799884 in words is "nineteen million, seven hundred ninety-nine thousand, eight hundred eighty-four".