8539408540 has 24 divisors (see below), whose sum is σ = 19312201440. Its totient is φ = 3153012288.

The previous prime is 8539408477. The next prime is 8539408589. The reversal of 8539408540 is 458049358.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16421680 + ... + 16422199.

It is an arithmetic number, because the mean of its divisors is an integer number (804675060).

Almost surely, 2^8539408540 is an apocalyptic number.

It is an amenable number.

8539408540 is an abundant number, since it is smaller than the sum of its proper divisors (10772792900).

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

8539408540 is a wasteful number, since it uses less digits than its factorization.

8539408540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32843901 (or 32843899 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The square root of 8539408540 is about 92408.9202404183. The cubic root of 8539408540 is about 2043.9766513622.

The spelling of 8539408540 in words is "eight billion, five hundred thirty-nine million, four hundred eight thousand, five hundred forty".