478898444 has 12 divisors (see below), whose sum is σ = 838461624. Its totient is φ = 239337984.

The previous prime is 478898443. The next prime is 478898501. The reversal of 478898444 is 444898874.

It is a happy number.

It is a super-2 number, since 2×478898444² = 458687439331242272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 478898444.

It is not an unprimeable number, because it can be changed into a prime (478898443) 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 3 ways as a sum of consecutive naturals, for example, 17717 + ... + 35660.

It is an arithmetic number, because the mean of its divisors is an integer number (69871802).

Almost surely, 2^478898444 is an apocalyptic number.

It is an amenable number.

478898444 is a deficient number, since it is larger than the sum of its proper divisors (359563180).

478898444 is a wasteful number, since it uses less digits than its factorization.

478898444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55624 (or 55622 counting only the distinct ones).

The product of its digits is 8257536, while the sum is 56.

The square root of 478898444 is about 21883.7483992117. The cubic root of 478898444 is about 782.3741186447.

The spelling of 478898444 in words is "four hundred seventy-eight million, eight hundred ninety-eight thousand, four hundred forty-four".