9806139 has 12 divisors (see below), whose sum is σ = 16188016. Its totient is φ = 5603472.

The previous prime is 9806117. The next prime is 9806171. The reversal of 9806139 is 9316089.

9806139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9806139 - 2⁸ = 9805883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9806189) 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, 77764 + ... + 77889.

Almost surely, 2^9806139 is an apocalyptic number.

9806139 is a deficient number, since it is larger than the sum of its proper divisors (6381877).

9806139 is a wasteful number, since it uses less digits than its factorization.

9806139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155666 (or 155663 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 9806139 is about 3131.4755308001. The cubic root of 9806139 is about 214.0421715009.

The spelling of 9806139 in words is "nine million, eight hundred six thousand, one hundred thirty-nine".