404447005 has 4 divisors (see below), whose sum is σ = 485336412. Its totient is φ = 323557600.

The previous prime is 404446969. The next prime is 404447023. The reversal of 404447005 is 500744404.

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 304886521 + 99560484 = 17461^2 + 9978^2 .

It is not a de Polignac number, because 404447005 - 2²⁵ = 370892573 is a prime.

It is a Duffinian number.

It is a congruent 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, 40444696 + ... + 40444705.

It is an arithmetic number, because the mean of its divisors is an integer number (121334103).

Almost surely, 2^404447005 is an apocalyptic number.

It is an amenable number.

404447005 is a deficient number, since it is larger than the sum of its proper divisors (80889407).

404447005 is an equidigital number, since it uses as much as digits as its factorization.

404447005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80889406.

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 404447005 is about 20110.8678330897. The cubic root of 404447005 is about 739.5267274501.

The spelling of 404447005 in words is "four hundred four million, four hundred forty-seven thousand, five".