19479868 has 12 divisors (see below), whose sum is σ = 34200880. Its totient is φ = 9708192.

The previous prime is 19479847. The next prime is 19479869. The reversal of 19479868 is 86897491.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19479869) 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 3 ways as a sum of consecutive naturals, for example, 6528 + ... + 9031.

Almost surely, 2^19479868 is an apocalyptic number.

It is an amenable number.

19479868 is a deficient number, since it is larger than the sum of its proper divisors (14721012).

19479868 is a wasteful number, since it uses less digits than its factorization.

19479868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15876 (or 15874 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The square root of 19479868 is about 4413.6003443901. The cubic root of 19479868 is about 269.0679706441.

The spelling of 19479868 in words is "nineteen million, four hundred seventy-nine thousand, eight hundred sixty-eight".