8506489986 has 12 divisors (see below), whose sum is σ = 18430728342. Its totient is φ = 2835496656.

The previous prime is 8506489969. The next prime is 8506489997. The reversal of 8506489986 is 6899846058.

8506489986 is a `hidden beast` number, since 8 + 506 + 48 + 9 + 9 + 86 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8479647225 + 26842761 = 92085^2 + 5181^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 236291371 + ... + 236291406.

Almost surely, 2^8506489986 is an apocalyptic number.

8506489986 is an abundant number, since it is smaller than the sum of its proper divisors (9924238356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8506489986 is a wasteful number, since it uses less digits than its factorization.

8506489986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472582785 (or 472582782 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

The square root of 8506489986 is about 92230.6347478971. The cubic root of 8506489986 is about 2041.3468283196.

The spelling of 8506489986 in words is "eight billion, five hundred six million, four hundred eighty-nine thousand, nine hundred eighty-six".