9539713447 has 12 divisors (see below), whose sum is σ = 10491004888. Its totient is φ = 8668162800.

The previous prime is 9539713411. The next prime is 9539713453. The reversal of 9539713447 is 7443179359.

It is a de Polignac number, because none of the positive numbers 2^k-9539713447 is a prime.

It is a super-2 number, since 2×9539713447² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9539713394 and 9539713403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9539713487) 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, 239353 + ... + 276349.

Almost surely, 2^9539713447 is an apocalyptic number.

9539713447 is a deficient number, since it is larger than the sum of its proper divisors (951291441).

9539713447 is a wasteful number, since it uses less digits than its factorization.

9539713447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39150 (or 39139 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 52.

The square root of 9539713447 is about 97671.4566646776. The cubic root of 9539713447 is about 2120.8589025238.

The spelling of 9539713447 in words is "nine billion, five hundred thirty-nine million, seven hundred thirteen thousand, four hundred forty-seven".