8559149940 has 72 divisors (see below), whose sum is σ = 28323011808. Its totient is φ = 2074944960.

The previous prime is 8559149933. The next prime is 8559149971. The reversal of 8559149940 is 499419558.

8559149940 is a `hidden beast` number, since 8 + 5 + 591 + 4 + 9 + 9 + 40 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2159422 + ... + 2163381.

It is an arithmetic number, because the mean of its divisors is an integer number (393375164).

Almost surely, 2^8559149940 is an apocalyptic number.

It is an amenable number.

8559149940 is an abundant number, since it is smaller than the sum of its proper divisors (19763861868).

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

8559149940 is a wasteful number, since it uses less digits than its factorization.

8559149940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4322829 (or 4322824 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The square root of 8559149940 is about 92515.6740233783. The cubic root of 8559149940 is about 2045.5505271917.

It can be divided in two parts, 85591 and 49940, that added together give a palindrome (135531).

The spelling of 8559149940 in words is "eight billion, five hundred fifty-nine million, one hundred forty-nine thousand, nine hundred forty".