404048505 has 32 divisors (see below), whose sum is σ = 741823488. Its totient is φ = 183960000.

The previous prime is 404048501. The next prime is 404048507. The reversal of 404048505 is 505840404.

It is not a de Polignac number, because 404048505 - 2² = 404048501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404048501) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 18690 + ... + 34020.

It is an arithmetic number, because the mean of its divisors is an integer number (23181984).

Almost surely, 2^404048505 is an apocalyptic number.

It is an amenable number.

404048505 is a deficient number, since it is larger than the sum of its proper divisors (337774983).

404048505 is a wasteful number, since it uses less digits than its factorization.

404048505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15597.

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 404048505 is about 20100.9578129999. The cubic root of 404048505 is about 739.2837634032.

Adding to 404048505 its reverse (505840404), we get a palindrome (909888909).

The spelling of 404048505 in words is "four hundred four million, forty-eight thousand, five hundred five".