478440564 has 24 divisors (see below), whose sum is σ = 1275841728. Its totient is φ = 136697280.

The previous prime is 478440563. The next prime is 478440581. The reversal of 478440564 is 465044874.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478440563) 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 7 ways as a sum of consecutive naturals, for example, 2847777 + ... + 2847944.

It is an arithmetic number, because the mean of its divisors is an integer number (53160072).

Almost surely, 2^478440564 is an apocalyptic number.

It is an amenable number.

478440564 is an abundant number, since it is smaller than the sum of its proper divisors (797401164).

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

478440564 is a wasteful number, since it uses less digits than its factorization.

478440564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5695735 (or 5695733 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 42.

The square root of 478440564 is about 21873.2842527134. The cubic root of 478440564 is about 782.1246936731.

The spelling of 478440564 in words is "four hundred seventy-eight million, four hundred forty thousand, five hundred sixty-four".