9660339831 has 4 divisors (see below), whose sum is σ = 12880453112. Its totient is φ = 6440226552.

The previous prime is 9660339809. The next prime is 9660339833. The reversal of 9660339831 is 1389330669.

It is a happy number.

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

It is not a de Polignac number, because 9660339831 - 2¹¹ = 9660337783 is a prime.

It is a super-2 number, since 2×9660339831² (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 (9660339833) 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, 1610056636 + ... + 1610056641.

It is an arithmetic number, because the mean of its divisors is an integer number (3220113278).

Almost surely, 2^9660339831 is an apocalyptic number.

9660339831 is a deficient number, since it is larger than the sum of its proper divisors (3220113281).

9660339831 is a wasteful number, since it uses less digits than its factorization.

9660339831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220113280.

The product of its (nonzero) digits is 629856, while the sum is 48.

The square root of 9660339831 is about 98287.0277859698. The cubic root of 9660339831 is about 2129.7606636677.

The spelling of 9660339831 in words is "nine billion, six hundred sixty million, three hundred thirty-nine thousand, eight hundred thirty-one".