8505945590 has 16 divisors (see below), whose sum is σ = 15312319488. Its totient is φ = 3402018816.

The previous prime is 8505945521. The next prime is 8505945599. The reversal of 8505945590 is 955495058.

It is a super-2 number, since 2×8505945590² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8505945599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67979 + ... + 147081.

It is an arithmetic number, because the mean of its divisors is an integer number (957019968).

Almost surely, 2^8505945590 is an apocalyptic number.

8505945590 is a deficient number, since it is larger than the sum of its proper divisors (6806373898).

8505945590 is a wasteful number, since it uses less digits than its factorization.

8505945590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89863.

The product of its (nonzero) digits is 1620000, while the sum is 50.

The square root of 8505945590 is about 92227.6834253143. The cubic root of 8505945590 is about 2041.3032802068.

The spelling of 8505945590 in words is "eight billion, five hundred five million, nine hundred forty-five thousand, five hundred ninety".