478664916 has 12 divisors (see below), whose sum is σ = 1116884832. Its totient is φ = 159554968.

The previous prime is 478664899. The next prime is 478664941. The reversal of 478664916 is 619466874.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19944360 + ... + 19944383.

It is an arithmetic number, because the mean of its divisors is an integer number (93073736).

Almost surely, 2^478664916 is an apocalyptic number.

It is an amenable number.

478664916 is an abundant number, since it is smaller than the sum of its proper divisors (638219916).

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

478664916 is a wasteful number, since it uses less digits than its factorization.

478664916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39888750 (or 39888748 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 478664916 is about 21878.4120996017. The cubic root of 478664916 is about 782.2469267724.

The spelling of 478664916 in words is "four hundred seventy-eight million, six hundred sixty-four thousand, nine hundred sixteen".