4478785 has 4 divisors (see below), whose sum is σ = 5374548. Its totient is φ = 3583024.

The previous prime is 4478783. The next prime is 4478801. The reversal of 4478785 is 5878744.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3470769 + 1008016 = 1863^2 + 1004^2 .

It is a cyclic number.

It is not a de Polignac number, because 4478785 - 2¹ = 4478783 is a prime.

It is a d-powerful number, because it can be written as 4 + 4⁹ + 7⁴ + 8⁷ + 7⁵ + 8⁷ + 5⁵ .

It is a Duffinian number.

4478785 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4478783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447874 + ... + 447883.

It is an arithmetic number, because the mean of its divisors is an integer number (1343637).

Almost surely, 2^4478785 is an apocalyptic number.

It is an amenable number.

4478785 is a deficient number, since it is larger than the sum of its proper divisors (895763).

4478785 is an equidigital number, since it uses as much as digits as its factorization.

4478785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895762.

The product of its digits is 250880, while the sum is 43.

The square root of 4478785 is about 2116.3140126172. The cubic root of 4478785 is about 164.8365077829.

The spelling of 4478785 in words is "four million, four hundred seventy-eight thousand, seven hundred eighty-five".