9539947323 has 12 divisors (see below), whose sum is σ = 13782626208. Its totient is φ = 6358717680.

The previous prime is 9539947321. The next prime is 9539947327. The reversal of 9539947323 is 3237499359.

It is not a de Polignac number, because 9539947323 - 2¹ = 9539947321 is a prime.

It is a super-2 number, since 2×9539947323² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9539947323.

It is not an unprimeable number, because it can be changed into a prime (9539947321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54240 + ... + 148397.

It is an arithmetic number, because the mean of its divisors is an integer number (1148552184).

Almost surely, 2^9539947323 is an apocalyptic number.

9539947323 is a deficient number, since it is larger than the sum of its proper divisors (4242678885).

9539947323 is a wasteful number, since it uses less digits than its factorization.

9539947323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207874 (or 207871 counting only the distinct ones).

The product of its digits is 5511240, while the sum is 54.

The square root of 9539947323 is about 97672.6539160271. The cubic root of 9539947323 is about 2120.8762340696.

The spelling of 9539947323 in words is "nine billion, five hundred thirty-nine million, nine hundred forty-seven thousand, three hundred twenty-three".