993986 has 8 divisors (see below), whose sum is σ = 1704000. Its totient is φ = 425988.

The previous prime is 993983. The next prime is 993997. The reversal of 993986 is 689399.

993986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 993986.

It is not an unprimeable number, because it can be changed into a prime (993983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35486 + ... + 35513.

It is an arithmetic number, because the mean of its divisors is an integer number (213000).

2⁹⁹³⁹⁸⁶ is an apocalyptic number.

993986 is a deficient number, since it is larger than the sum of its proper divisors (710014).

993986 is a wasteful number, since it uses less digits than its factorization.

993986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71008.

The product of its digits is 104976, while the sum is 44.

The square root of 993986 is about 996.9884653295. The cubic root of 993986 is about 99.7991301164.

The spelling of 993986 in words is "nine hundred ninety-three thousand, nine hundred eighty-six".