9678009 has 32 divisors (see below), whose sum is σ = 15095808. Its totient is φ = 5456000.

The previous prime is 9678007. The next prime is 9678013. The reversal of 9678009 is 9008769.

It is not a de Polignac number, because 9678009 - 2¹ = 9678007 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9678007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30964 + ... + 31274.

It is an arithmetic number, because the mean of its divisors is an integer number (471744).

Almost surely, 2^9678009 is an apocalyptic number.

It is an amenable number.

9678009 is a deficient number, since it is larger than the sum of its proper divisors (5417799).

9678009 is a wasteful number, since it uses less digits than its factorization.

9678009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 9678009 is about 3110.9498549478. The cubic root of 9678009 is about 213.1058346844.

The spelling of 9678009 in words is "nine million, six hundred seventy-eight thousand, nine".