8231021986 has 16 divisors (see below), whose sum is σ = 13471735968. Its totient is φ = 3740598400.

The previous prime is 8231021963. The next prime is 8231021993. The reversal of 8231021986 is 6891201328.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77586 + ... + 149938.

It is an arithmetic number, because the mean of its divisors is an integer number (841983498).

Almost surely, 2^8231021986 is an apocalyptic number.

8231021986 is a deficient number, since it is larger than the sum of its proper divisors (5240713982).

8231021986 is a wasteful number, since it uses less digits than its factorization.

8231021986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77537.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 8231021986 is about 90724.9799448862. The cubic root of 8231021986 is about 2019.0694326631.

The spelling of 8231021986 in words is "eight billion, two hundred thirty-one million, twenty-one thousand, nine hundred eighty-six".