404040505 has 8 divisors (see below), whose sum is σ = 528925824. Its totient is φ = 293847600.

The previous prime is 404040503. The next prime is 404040587. The reversal of 404040505 is 505040404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 404040505 - 2¹ = 404040503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404040503) 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 7 ways as a sum of consecutive naturals, for example, 3673041 + ... + 3673150.

It is an arithmetic number, because the mean of its divisors is an integer number (66115728).

Almost surely, 2^404040505 is an apocalyptic number.

It is an amenable number.

404040505 is a deficient number, since it is larger than the sum of its proper divisors (124885319).

404040505 is a wasteful number, since it uses less digits than its factorization.

404040505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7346207.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 404040505 is about 20100.7588165223. The cubic root of 404040505 is about 739.2788841960.

Adding to 404040505 its reverse (505040404), we get a palindrome (909080909).

The spelling of 404040505 in words is "four hundred four million, forty thousand, five hundred five".