8869447540 has 24 divisors (see below), whose sum is σ = 18634645512. Its totient is φ = 3546101760.

The previous prime is 8869447529. The next prime is 8869447547. The reversal of 8869447540 is 457449688.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 32695524 + 8836752016 = 5718^2 + 94004^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8869447547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61021 + ... + 146500.

It is an arithmetic number, because the mean of its divisors is an integer number (776443563).

Almost surely, 2^8869447540 is an apocalyptic number.

It is an amenable number.

8869447540 is an abundant number, since it is smaller than the sum of its proper divisors (9765197972).

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

8869447540 is a wasteful number, since it uses less digits than its factorization.

8869447540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209667 (or 209665 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The square root of 8869447540 is about 94177.7443985573. The cubic root of 8869447540 is about 2069.9770151555.

The spelling of 8869447540 in words is "eight billion, eight hundred sixty-nine million, four hundred forty-seven thousand, five hundred forty".