404412605 has 4 divisors (see below), whose sum is σ = 485295132. Its totient is φ = 323530080.

The previous prime is 404412601. The next prime is 404412607. The reversal of 404412605 is 506214404.

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 134073241 + 270339364 = 11579^2 + 16442^2 .

It is not a de Polignac number, because 404412605 - 2² = 404412601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404412601) 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, 40441256 + ... + 40441265.

It is an arithmetic number, because the mean of its divisors is an integer number (121323783).

Almost surely, 2^404412605 is an apocalyptic number.

It is an amenable number.

404412605 is a deficient number, since it is larger than the sum of its proper divisors (80882527).

404412605 is an equidigital number, since it uses as much as digits as its factorization.

404412605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80882526.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 404412605 is about 20110.0125559384. The cubic root of 404412605 is about 739.5057601867.

The spelling of 404412605 in words is "four hundred four million, four hundred twelve thousand, six hundred five".