4385328785 has 8 divisors (see below), whose sum is σ = 5284231656. Its totient is φ = 3493704960.

The previous prime is 4385328769. The next prime is 4385328793. The reversal of 4385328785 is 5878235834.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 149401729 + 4235927056 = 12223^2 + 65084^2 .

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

It is not a de Polignac number, because 4385328785 - 2⁴ = 4385328769 is a prime.

It is a super-2 number, since 2×4385328785² = 38462217105099152450, which contains 22 as substring.

It is a Duffinian number.

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, 1818434 + ... + 1820843.

It is an arithmetic number, because the mean of its divisors is an integer number (660528957).

Almost surely, 2^4385328785 is an apocalyptic number.

It is an amenable number.

4385328785 is a deficient number, since it is larger than the sum of its proper divisors (898902871).

4385328785 is a wasteful number, since it uses less digits than its factorization.

4385328785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3639523.

The product of its digits is 6451200, while the sum is 53.

The square root of 4385328785 is about 66221.8150234498. The cubic root of 4385328785 is about 1636.8192346098.

The spelling of 4385328785 in words is "four billion, three hundred eighty-five million, three hundred twenty-eight thousand, seven hundred eighty-five".