8949071986 has 4 divisors (see below), whose sum is σ = 13423607982. Its totient is φ = 4474535992.

The previous prime is 8949071977. The next prime is 8949072023. The reversal of 8949071986 is 6891709498.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5803544761 + 3145527225 = 76181^2 + 56085^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2237267995 + ... + 2237267998.

Almost surely, 2^8949071986 is an apocalyptic number.

8949071986 is a deficient number, since it is larger than the sum of its proper divisors (4474535996).

8949071986 is a wasteful number, since it uses less digits than its factorization.

8949071986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4474535995.

The product of its (nonzero) digits is 7838208, while the sum is 61.

The square root of 8949071986 is about 94599.5348085814. The cubic root of 8949071986 is about 2076.1528976912.

The spelling of 8949071986 in words is "eight billion, nine hundred forty-nine million, seventy-one thousand, nine hundred eighty-six".