3994536448 has 120 divisors (see below), whose sum is σ = 9393902100. Its totient is φ = 1691762688.

The previous prime is 3994536443. The next prime is 3994536463. The reversal of 3994536448 is 8446354993.

It can be written as a sum of positive squares in 2 ways, for example, as 3947860224 + 46676224 = 62832^2 + 6832^2 .

It is not an unprimeable number, because it can be changed into a prime (3994536443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2231938 + ... + 2233726.

Almost surely, 2^3994536448 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 3994536448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4696951050).

3994536448 is an abundant number, since it is smaller than the sum of its proper divisors (5399365652).

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

3994536448 is an equidigital number, since it uses as much as digits as its factorization.

3994536448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910 (or 1887 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 55.

The square root of 3994536448 is about 63202.3452729406. The cubic root of 3994536448 is about 1586.6779853095.

The spelling of 3994536448 in words is "three billion, nine hundred ninety-four million, five hundred thirty-six thousand, four hundred forty-eight".