4494721392 has 480 divisors, whose sum is σ = 15982012800. Its totient is φ = 1174118400.

The previous prime is 4494721379. The next prime is 4494721393. The reversal of 4494721392 is 2931274944.

4494721392 is a `hidden beast` number, since 4 + 49 + 472 + 139 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4494721393) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 44502142 + ... + 44502242.

It is an arithmetic number, because the mean of its divisors is an integer number (33295860).

Almost surely, 2^4494721392 is an apocalyptic number.

4494721392 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4494721392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7991006400).

4494721392 is an abundant number, since it is smaller than the sum of its proper divisors (11487291408).

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

4494721392 is a wasteful number, since it uses less digits than its factorization.

4494721392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 183 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 4494721392 is about 67042.6833591854. The cubic root of 4494721392 is about 1650.3178318865.

The spelling of 4494721392 in words is "four billion, four hundred ninety-four million, seven hundred twenty-one thousand, three hundred ninety-two".