9664492589 has 4 divisors (see below), whose sum is σ = 9704594460. Its totient is φ = 9624390720.

The previous prime is 9664492577. The next prime is 9664492603. The reversal of 9664492589 is 9852944669.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2802855364 + 6861637225 = 52942^2 + 82835^2 .

It is a cyclic number.

It is not a de Polignac number, because 9664492589 - 2⁴ = 9664492573 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 (9664491589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20050574 + ... + 20051055.

It is an arithmetic number, because the mean of its divisors is an integer number (2426148615).

Almost surely, 2^9664492589 is an apocalyptic number.

It is an amenable number.

9664492589 is a deficient number, since it is larger than the sum of its proper divisors (40101871).

9664492589 is a wasteful number, since it uses less digits than its factorization.

9664492589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40101870.

The product of its digits is 33592320, while the sum is 62.

The square root of 9664492589 is about 98308.1511829004. The cubic root of 9664492589 is about 2130.0657983303.

The spelling of 9664492589 in words is "nine billion, six hundred sixty-four million, four hundred ninety-two thousand, five hundred eighty-nine".