8539329408 has 128 divisors (see below), whose sum is σ = 23306363520. Its totient is φ = 2768726016.

The previous prime is 8539329401. The next prime is 8539329481. The reversal of 8539329408 is 8049239358.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8539329401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4572891 + ... + 4574757.

It is an arithmetic number, because the mean of its divisors is an integer number (182080965).

Almost surely, 2^8539329408 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 8539329408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11653181760).

8539329408 is an abundant number, since it is smaller than the sum of its proper divisors (14767034112).

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

8539329408 is a wasteful number, since it uses less digits than its factorization.

8539329408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204 (or 2192 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The square root of 8539329408 is about 92408.4920772977. The cubic root of 8539329408 is about 2043.9703377142.

The spelling of 8539329408 in words is "eight billion, five hundred thirty-nine million, three hundred twenty-nine thousand, four hundred eight".