9664958239 has 4 divisors (see below), whose sum is σ = 9689804280. Its totient is φ = 9640112200.

The previous prime is 9664958231. The next prime is 9664958243. The reversal of 9664958239 is 9328594669.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9328594669 = 2939 ⋅3174071.

It is a cyclic number.

It is not a de Polignac number, because 9664958239 - 2³ = 9664958231 is a prime.

It is a super-2 number, since 2×9664958239² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9664958231) 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, 12422437 + ... + 12423214.

It is an arithmetic number, because the mean of its divisors is an integer number (2422451070).

Almost surely, 2^9664958239 is an apocalyptic number.

9664958239 is a deficient number, since it is larger than the sum of its proper divisors (24846041).

9664958239 is a wasteful number, since it uses less digits than its factorization.

9664958239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24846040.

The product of its digits is 25194240, while the sum is 61.

The square root of 9664958239 is about 98310.5194727400. The cubic root of 9664958239 is about 2130.1000077211.

The spelling of 9664958239 in words is "nine billion, six hundred sixty-four million, nine hundred fifty-eight thousand, two hundred thirty-nine".