478523844 has 18 divisors (see below), whose sum is σ = 1209602030. Its totient is φ = 159507936.

The previous prime is 478523819. The next prime is 478523861. The reversal of 478523844 is 448325874.

It is a happy number.

478523844 is a `hidden beast` number, since 47 + 8 + 523 + 84 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 397523844 + 81000000 = 19938^2 + 9000^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 478523844.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 6646129 + ... + 6646200.

Almost surely, 2^478523844 is an apocalyptic number.

It is an amenable number.

478523844 is an abundant number, since it is smaller than the sum of its proper divisors (731078186).

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

478523844 is a wasteful number, since it uses less digits than its factorization.

478523844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13292339 (or 13292334 counting only the distinct ones).

The product of its digits is 860160, while the sum is 45.

The square root of 478523844 is about 21875.1878620505. The cubic root of 478523844 is about 782.1700713511.

The spelling of 478523844 in words is "four hundred seventy-eight million, five hundred twenty-three thousand, eight hundred forty-four".