9715989 has 8 divisors (see below), whose sum is σ = 13372672. Its totient is φ = 6268320.

The previous prime is 9715969. The next prime is 9715991. The reversal of 9715989 is 9895179.

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

It is not a de Polignac number, because 9715989 - 2⁷ = 9715861 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 (9715969) 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, 52144 + ... + 52329.

It is an arithmetic number, because the mean of its divisors is an integer number (1671584).

Almost surely, 2^9715989 is an apocalyptic number.

It is an amenable number.

9715989 is a deficient number, since it is larger than the sum of its proper divisors (3656683).

9715989 is a wasteful number, since it uses less digits than its factorization.

9715989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104507.

The product of its digits is 204120, while the sum is 48.

The square root of 9715989 is about 3117.0481228239. The cubic root of 9715989 is about 213.3842388828.

The spelling of 9715989 in words is "nine million, seven hundred fifteen thousand, nine hundred eighty-nine".