9986403 has 16 divisors (see below), whose sum is σ = 15276800. Its totient is φ = 5684256.

The previous prime is 9986377. The next prime is 9986407. The reversal of 9986403 is 3046899.

It is not a de Polignac number, because 9986403 - 2⁹ = 9985891 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

9986403 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9986407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5673 + ... + 7221.

It is an arithmetic number, because the mean of its divisors is an integer number (954800).

Almost surely, 2^9986403 is an apocalyptic number.

9986403 is a deficient number, since it is larger than the sum of its proper divisors (5290397).

9986403 is a wasteful number, since it uses less digits than its factorization.

9986403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 9986403 is about 3160.1270544078. The cubic root of 9986403 is about 215.3457785516.

The spelling of 9986403 in words is "nine million, nine hundred eighty-six thousand, four hundred three".