404413505 has 4 divisors (see below), whose sum is σ = 485296212. Its totient is φ = 323530800.

The previous prime is 404413487. The next prime is 404413519. The reversal of 404413505 is 505314404.

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 57820816 + 346592689 = 7604^2 + 18617^2 .

It is not a de Polignac number, because 404413505 - 2¹² = 404409409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40441346 + ... + 40441355.

It is an arithmetic number, because the mean of its divisors is an integer number (121324053).

Almost surely, 2^404413505 is an apocalyptic number.

It is an amenable number.

404413505 is a deficient number, since it is larger than the sum of its proper divisors (80882707).

404413505 is an equidigital number, since it uses as much as digits as its factorization.

404413505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80882706.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 404413505 is about 20110.0349328389. The cubic root of 404413505 is about 739.5063087640.

Adding to 404413505 its reverse (505314404), we get a palindrome (909727909).

The spelling of 404413505 in words is "four hundred four million, four hundred thirteen thousand, five hundred five".