477985 has 4 divisors (see below), whose sum is σ = 573588. Its totient is φ = 382384.

The previous prime is 477977. The next prime is 477991. The reversal of 477985 is 589774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589774 = 2 ⋅294887.

It can be written as a sum of positive squares in 2 ways, for example, as 58081 + 419904 = 241^2 + 648^2 .

It is a cyclic number.

It is not a de Polignac number, because 477985 - 2³ = 477977 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47794 + ... + 47803.

It is an arithmetic number, because the mean of its divisors is an integer number (143397).

2⁴⁷⁷⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

477985 is a deficient number, since it is larger than the sum of its proper divisors (95603).

477985 is an equidigital number, since it uses as much as digits as its factorization.

477985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95602.

The product of its digits is 70560, while the sum is 40.

The square root of 477985 is about 691.3645926716. The cubic root of 477985 is about 78.1876372334.

The spelling of 477985 in words is "four hundred seventy-seven thousand, nine hundred eighty-five".