4394544128 has 176 divisors, whose sum is σ = 10212335616. Its totient is φ = 1873428480.

The previous prime is 4394544113. The next prime is 4394544157. The reversal of 4394544128 is 8214454934.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9491225 + ... + 9491687.

Almost surely, 2^4394544128 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 4394544128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5106167808).

4394544128 is an abundant number, since it is smaller than the sum of its proper divisors (5817791488).

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

4394544128 is a wasteful number, since it uses less digits than its factorization.

4394544128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 532 counting only the distinct ones).

The product of its digits is 552960, while the sum is 44.

The square root of 4394544128 is about 66291.3578681264. The cubic root of 4394544128 is about 1637.9649713746.

The spelling of 4394544128 in words is "four billion, three hundred ninety-four million, five hundred forty-four thousand, one hundred twenty-eight".