9681389 has 8 divisors (see below), whose sum is σ = 10229760. Its totient is φ = 9147376.

The previous prime is 9681361. The next prime is 9681401. The reversal of 9681389 is 9831869.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9681389 - 2¹² = 9677293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9681319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2189 + ... + 4914.

It is an arithmetic number, because the mean of its divisors is an integer number (1278720).

Almost surely, 2^9681389 is an apocalyptic number.

It is an amenable number.

9681389 is a deficient number, since it is larger than the sum of its proper divisors (548371).

9681389 is a wasteful number, since it uses less digits than its factorization.

9681389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7179.

The product of its digits is 93312, while the sum is 44.

The square root of 9681389 is about 3111.4930499681. The cubic root of 9681389 is about 213.1306405401.

The spelling of 9681389 in words is "nine million, six hundred eighty-one thousand, three hundred eighty-nine".