9986931 has 12 divisors (see below), whose sum is σ = 14629680. Its totient is φ = 6563760.

The previous prime is 9986917. The next prime is 9986941. The reversal of 9986931 is 1396899.

9986931 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9986931 - 2¹³ = 9978739 is a prime.

It is a super-2 number, since 2×9986931² = 199477581597522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9986941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7176 + ... + 8453.

It is an arithmetic number, because the mean of its divisors is an integer number (1219140).

Almost surely, 2^9986931 is an apocalyptic number.

9986931 is a deficient number, since it is larger than the sum of its proper divisors (4642749).

9986931 is a wasteful number, since it uses less digits than its factorization.

9986931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15706 (or 15703 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 9986931 is about 3160.2105942484. The cubic root of 9986931 is about 215.3495737308.

The spelling of 9986931 in words is "nine million, nine hundred eighty-six thousand, nine hundred thirty-one".