404190085 has 16 divisors (see below), whose sum is σ = 523152000. Its totient is φ = 298013760.

The previous prime is 404190047. The next prime is 404190089. The reversal of 404190085 is 580091404.

It is a happy number.

It is not a de Polignac number, because 404190085 - 2⁷ = 404189957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404190089) 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, 40416 + ... + 49414.

It is an arithmetic number, because the mean of its divisors is an integer number (32697000).

Almost surely, 2^404190085 is an apocalyptic number.

It is an amenable number.

404190085 is a deficient number, since it is larger than the sum of its proper divisors (118961915).

404190085 is a wasteful number, since it uses less digits than its factorization.

404190085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9708.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 404190085 is about 20104.4792272767. The cubic root of 404190085 is about 739.3701025193.

The spelling of 404190085 in words is "four hundred four million, one hundred ninety thousand, eighty-five".