4494639240 has 1024 divisors, whose sum is σ = 20321280000. Its totient is φ = 856977408.

The previous prime is 4494639223. The next prime is 4494639287. The reversal of 4494639240 is 429364944.

4494639240 is a `hidden beast` number, since 4 + 4 + 9 + 4 + 639 + 2 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 54152239 + ... + 54152321.

It is an arithmetic number, because the mean of its divisors is an integer number (19845000).

Almost surely, 2^4494639240 is an apocalyptic number.

4494639240 is a gapful number since it is divisible by the number (40) 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 4494639240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10160640000).

4494639240 is an abundant number, since it is smaller than the sum of its proper divisors (15826640760).

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

4494639240 is a wasteful number, since it uses less digits than its factorization.

4494639240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The square root of 4494639240 is about 67042.0706720787. The cubic root of 4494639240 is about 1650.3077772970.

The spelling of 4494639240 in words is "four billion, four hundred ninety-four million, six hundred thirty-nine thousand, two hundred forty".