4491744896 has 64 divisors (see below), whose sum is σ = 9604905480. Its totient is φ = 2084732928.

The previous prime is 4491744889. The next prime is 4491744919. The reversal of 4491744896 is 6984471944.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4162830400 + 328914496 = 64520^2 + 18136^2 .

It is a tau number, because it is divible by the number of its divisors (64).

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, 144710 + ... + 172986.

Almost surely, 2^4491744896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4491744896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4802452740).

4491744896 is an abundant number, since it is smaller than the sum of its proper divisors (5113160584).

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

4491744896 is a wasteful number, since it uses less digits than its factorization.

4491744896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28381 (or 28369 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 56.

The square root of 4491744896 is about 67020.4811680728. The cubic root of 4491744896 is about 1649.9534600892.

The spelling of 4491744896 in words is "four billion, four hundred ninety-one million, seven hundred forty-four thousand, eight hundred ninety-six".