478864864 has 12 divisors (see below), whose sum is σ = 942765264. Its totient is φ = 239432416.

The previous prime is 478864829. The next prime is 478864901. The reversal of 478864864 is 468468874.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7482232 + ... + 7482295.

It is an arithmetic number, because the mean of its divisors is an integer number (78563772).

Almost surely, 2^478864864 is an apocalyptic number.

It is an amenable number.

478864864 is a deficient number, since it is larger than the sum of its proper divisors (463900400).

478864864 is a wasteful number, since it uses less digits than its factorization.

478864864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14964537 (or 14964529 counting only the distinct ones).

The product of its digits is 8257536, while the sum is 55.

The square root of 478864864 is about 21882.9811497428. The cubic root of 478864864 is about 782.3558317217.

The spelling of 478864864 in words is "four hundred seventy-eight million, eight hundred sixty-four thousand, eight hundred sixty-four".