478985 has 8 divisors (see below), whose sum is σ = 619080. Its totient is φ = 353664.

The previous prime is 478967. The next prime is 478991. The reversal of 478985 is 589874.

It can be written as a sum of positive squares in 4 ways, for example, as 65536 + 413449 = 256^2 + 643^2 .

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 478985 - 2⁸ = 478729 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 478985.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3620 + ... + 3749.

It is an arithmetic number, because the mean of its divisors is an integer number (77385).

2⁴⁷⁸⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

478985 is a deficient number, since it is larger than the sum of its proper divisors (140095).

478985 is a wasteful number, since it uses less digits than its factorization.

478985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7387.

The product of its digits is 80640, while the sum is 41.

The square root of 478985 is about 692.0874222235. The cubic root of 478985 is about 78.2421251181.

Subtracting 478985 from its reverse (589874), we obtain a square (110889 = 333²).

The spelling of 478985 in words is "four hundred seventy-eight thousand, nine hundred eighty-five".