8644149472 has 48 divisors (see below), whose sum is σ = 19779016320. Its totient is φ = 3641839488.

The previous prime is 8644149419. The next prime is 8644149497. The reversal of 8644149472 is 2749414468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313818 + ... + 340249.

It is an arithmetic number, because the mean of its divisors is an integer number (412062840).

Almost surely, 2^8644149472 is an apocalyptic number.

It is an amenable number.

8644149472 is an abundant number, since it is smaller than the sum of its proper divisors (11134866848).

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

8644149472 is a wasteful number, since it uses less digits than its factorization.

8644149472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654143 (or 654135 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 49.

The square root of 8644149472 is about 92973.9182351696. The cubic root of 8644149472 is about 2052.2995786839.

The spelling of 8644149472 in words is "eight billion, six hundred forty-four million, one hundred forty-nine thousand, four hundred seventy-two".