8021986 has 24 divisors (see below), whose sum is σ = 14610240. Its totient is φ = 3287592.

The previous prime is 8021969. The next prime is 8021989. The reversal of 8021986 is 6891208.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8021989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475 + ... + 4033.

It is an arithmetic number, because the mean of its divisors is an integer number (608760).

Almost surely, 2^8021986 is an apocalyptic number.

8021986 is a deficient number, since it is larger than the sum of its proper divisors (6588254).

8021986 is a wasteful number, since it uses less digits than its factorization.

8021986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3598 (or 3591 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 8021986 is about 2832.3110704864. The cubic root of 8021986 is about 200.1830490807.

The spelling of 8021986 in words is "eight million, twenty-one thousand, nine hundred eighty-six".