8939986 has 16 divisors (see below), whose sum is σ = 14681088. Its totient is φ = 4049200.

The previous prime is 8939971. The next prime is 8939989. The reversal of 8939986 is 6899398.

It is not an unprimeable number, because it can be changed into a prime (8939989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7896 + ... + 8956.

It is an arithmetic number, because the mean of its divisors is an integer number (917568).

Almost surely, 2^8939986 is an apocalyptic number.

8939986 is a deficient number, since it is larger than the sum of its proper divisors (5741102).

8939986 is a wasteful number, since it uses less digits than its factorization.

8939986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457.

The product of its digits is 839808, while the sum is 52.

The square root of 8939986 is about 2989.9809363941. The cubic root of 8939986 is about 207.5450020940.

The spelling of 8939986 in words is "eight million, nine hundred thirty-nine thousand, nine hundred eighty-six".