478944561 has 8 divisors (see below), whose sum is σ = 638694720. Its totient is φ = 319245392.

The previous prime is 478944509. The next prime is 478944563. The reversal of 478944561 is 165449874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 478944561 - 2¹³ = 478936369 is a prime.

It is a super-2 number, since 2×478944561² = 458775785022965442, 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 478944561.

It is not an unprimeable number, because it can be changed into a prime (478944563) 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, 25996 + ... + 40418.

It is an arithmetic number, because the mean of its divisors is an integer number (79836840).

Almost surely, 2^478944561 is an apocalyptic number.

It is an amenable number.

478944561 is a deficient number, since it is larger than the sum of its proper divisors (159750159).

478944561 is a wasteful number, since it uses less digits than its factorization.

478944561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25495.

The product of its digits is 967680, while the sum is 48.

The square root of 478944561 is about 21884.8020553077. The cubic root of 478944561 is about 782.3992315468.

The spelling of 478944561 in words is "four hundred seventy-eight million, nine hundred forty-four thousand, five hundred sixty-one".