9539520420 has 192 divisors, whose sum is σ = 29360620800. Its totient is φ = 2303508480.

The previous prime is 9539520379. The next prime is 9539520439. The reversal of 9539520420 is 240259359.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15410871 + ... + 15411489.

It is an arithmetic number, because the mean of its divisors is an integer number (152919900).

Almost surely, 2^9539520420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9539520420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14680310400).

9539520420 is an abundant number, since it is smaller than the sum of its proper divisors (19821100380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9539520420 is a wasteful number, since it uses less digits than its factorization.

9539520420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198 (or 1196 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 9539520420 is about 97670.4685153092. The cubic root of 9539520420 is about 2120.8445979085.

Adding to 9539520420 its reverse (240259359), we get a palindrome (9779779779).

The spelling of 9539520420 in words is "nine billion, five hundred thirty-nine million, five hundred twenty thousand, four hundred twenty".