404306085 has 16 divisors (see below), whose sum is σ = 654160320. Its totient is φ = 213206400.

The previous prime is 404306083. The next prime is 404306099. The reversal of 404306085 is 580603404.

It is not a de Polignac number, because 404306085 - 2¹ = 404306083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404306083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150091 + ... + 152760.

It is an arithmetic number, because the mean of its divisors is an integer number (40885020).

Almost surely, 2^404306085 is an apocalyptic number.

It is an amenable number.

404306085 is a deficient number, since it is larger than the sum of its proper divisors (249854235).

404306085 is a wasteful number, since it uses less digits than its factorization.

404306085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302948.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 404306085 is about 20107.3639495584. The cubic root of 404306085 is about 739.4408272694.

Adding to 404306085 its reverse (580603404), we get a palindrome (984909489).

The spelling of 404306085 in words is "four hundred four million, three hundred six thousand, eighty-five".