9393986 has 12 divisors (see below), whose sum is σ = 16391718. Its totient is φ = 4025952.

The previous prime is 9393977. The next prime is 9393991. The reversal of 9393986 is 6893939.

9393986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9186961 + 207025 = 3031^2 + 455^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 9393986.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47831 + ... + 48026.

Almost surely, 2^9393986 is an apocalyptic number.

9393986 is a deficient number, since it is larger than the sum of its proper divisors (6997732).

9393986 is a wasteful number, since it uses less digits than its factorization.

9393986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95873 (or 95866 counting only the distinct ones).

The product of its digits is 314928, while the sum is 47.

The square root of 9393986 is about 3064.9610111713. The cubic root of 9393986 is about 211.0004117899. Note that the first 3 decimals are identical.

Subtracting from 9393986 its sum of digits (47), we obtain a palindrome (9393939).

The spelling of 9393986 in words is "nine million, three hundred ninety-three thousand, nine hundred eighty-six".