9664989 has 8 divisors (see below), whose sum is σ = 13007520. Its totient is φ = 6382896.

The previous prime is 9664973. The next prime is 9664997. The reversal of 9664989 is 9894669.

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

It is not a de Polignac number, because 9664989 - 2⁴ = 9664973 is a prime.

9664989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9664909) 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, 14734 + ... + 15375.

It is an arithmetic number, because the mean of its divisors is an integer number (1625940).

Almost surely, 2^9664989 is an apocalyptic number.

It is an amenable number.

9664989 is a deficient number, since it is larger than the sum of its proper divisors (3342531).

9664989 is a wasteful number, since it uses less digits than its factorization.

9664989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30219.

The product of its digits is 839808, while the sum is 51.

The square root of 9664989 is about 3108.8565422033. The cubic root of 9664989 is about 213.0102267567.

The spelling of 9664989 in words is "nine million, six hundred sixty-four thousand, nine hundred eighty-nine".