8405504085 has 16 divisors (see below), whose sum is σ = 14671425600. Its totient is φ = 4075395840.

The previous prime is 8405504059. The next prime is 8405504087. The reversal of 8405504085 is 5804055048.

8405504085 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8405504085 - 2⁷ = 8405503957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8405504087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25471060 + ... + 25471389.

It is an arithmetic number, because the mean of its divisors is an integer number (916964100).

Almost surely, 2^8405504085 is an apocalyptic number.

It is an amenable number.

8405504085 is a deficient number, since it is larger than the sum of its proper divisors (6265921515).

8405504085 is a wasteful number, since it uses less digits than its factorization.

8405504085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50942468.

The product of its (nonzero) digits is 128000, while the sum is 39.

The square root of 8405504085 is about 91681.5362273124. The cubic root of 8405504085 is about 2033.2366112880.

The spelling of 8405504085 in words is "eight billion, four hundred five million, five hundred four thousand, eighty-five".