8199986 has 8 divisors (see below), whose sum is σ = 12501804. Its totient is φ = 4032720.

The previous prime is 8199979. The next prime is 8200007. The reversal of 8199986 is 6899918.

It can be written as a sum of positive squares in 2 ways, for example, as 7590025 + 609961 = 2755^2 + 781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33485 + ... + 33728.

Almost surely, 2^8199986 is an apocalyptic number.

8199986 is a deficient number, since it is larger than the sum of its proper divisors (4301818).

8199986 is a wasteful number, since it uses less digits than its factorization.

8199986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67276.

The product of its digits is 279936, while the sum is 50.

The square root of 8199986 is about 2863.5617681482. The cubic root of 8199986 is about 201.6528527599.

The spelling of 8199986 in words is "eight million, one hundred ninety-nine thousand, nine hundred eighty-six".