478646884 has 9 divisors (see below), whose sum is σ = 837708627. Its totient is φ = 239301564.

The previous prime is 478646873. The next prime is 478646887. The reversal of 478646884 is 488646874.

The square root of 478646884 is 21878.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478646887) 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 2 ways as a sum of consecutive naturals, for example, 38287 + ... + 49225.

Almost surely, 2^478646884 is an apocalyptic number.

478646884 is the 21878-th square number.

It is an amenable number.

478646884 is a deficient number, since it is larger than the sum of its proper divisors (359061743).

478646884 is an frugal number, since it uses more digits than its factorization.

478646884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21882 (or 10941 counting only the distinct ones).

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

The cubic root of 478646884 is about 782.2371038578.

The spelling of 478646884 in words is "four hundred seventy-eight million, six hundred forty-six thousand, eight hundred eighty-four".