404898805 has 4 divisors (see below), whose sum is σ = 485878572. Its totient is φ = 323919040.

The previous prime is 404898737. The next prime is 404898829. The reversal of 404898805 is 508898404.

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 125574436 + 279324369 = 11206^2 + 16713^2 .

It is not a de Polignac number, because 404898805 - 2¹¹ = 404896757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40489876 + ... + 40489885.

It is an arithmetic number, because the mean of its divisors is an integer number (121469643).

Almost surely, 2^404898805 is an apocalyptic number.

It is an amenable number.

404898805 is a deficient number, since it is larger than the sum of its proper divisors (80979767).

404898805 is an equidigital number, since it uses as much as digits as its factorization.

404898805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80979766.

The product of its (nonzero) digits is 368640, while the sum is 46.

The square root of 404898805 is about 20122.0974304370. The cubic root of 404898805 is about 739.8019953560.

It can be divided in two parts, 40489 and 8805, that added together give a palindrome (49294).

The spelling of 404898805 in words is "four hundred four million, eight hundred ninety-eight thousand, eight hundred five".