8869745844 has 36 divisors (see below), whose sum is σ = 22424518116. Its totient is φ = 2956084608.

The previous prime is 8869745821. The next prime is 8869745879. The reversal of 8869745844 is 4485479688.

8869745844 is a `hidden beast` number, since 88 + 69 + 7 + 458 + 44 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1058721444 + 7811024400 = 32538^2 + 88380^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241822 + ... + 276074.

It is an arithmetic number, because the mean of its divisors is an integer number (622903281).

Almost surely, 2^8869745844 is an apocalyptic number.

It is an amenable number.

8869745844 is an abundant number, since it is smaller than the sum of its proper divisors (13554772272).

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

8869745844 is a wasteful number, since it uses less digits than its factorization.

8869745844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41456 (or 41451 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 63.

The square root of 8869745844 is about 94179.3281139763. The cubic root of 8869745844 is about 2070.0002212420. Note that the first 3 decimals are identical.

The spelling of 8869745844 in words is "eight billion, eight hundred sixty-nine million, seven hundred forty-five thousand, eight hundred forty-four".