479728668 has 12 divisors (see below), whose sum is σ = 1119366920. Its totient is φ = 159909552.

The previous prime is 479728651. The next prime is 479728679. The reversal of 479728668 is 866827974.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 19988683 + ... + 19988706.

Almost surely, 2^479728668 is an apocalyptic number.

It is an amenable number.

479728668 is an abundant number, since it is smaller than the sum of its proper divisors (639638252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

479728668 is a wasteful number, since it uses less digits than its factorization.

479728668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39977396 (or 39977394 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 57.

The square root of 479728668 is about 21902.7091475005. The cubic root of 479728668 is about 782.8259686393.

The spelling of 479728668 in words is "four hundred seventy-nine million, seven hundred twenty-eight thousand, six hundred sixty-eight".