4491228852 has 72 divisors (see below), whose sum is σ = 12447987552. Its totient is φ = 1354046400.

The previous prime is 4491228829. The next prime is 4491228871. The reversal of 4491228852 is 2588221944.

4491228852 is a `hidden beast` number, since 449 + 122 + 8 + 85 + 2 = 666.

It is a super-2 number, since 2×4491228852² = 40342273202074475808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4491228798 and 4491228807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49227 + ... + 106797.

It is an arithmetic number, because the mean of its divisors is an integer number (172888716).

Almost surely, 2^4491228852 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 4491228852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6223993776).

4491228852 is an abundant number, since it is smaller than the sum of its proper divisors (7956758700).

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

4491228852 is a wasteful number, since it uses less digits than its factorization.

4491228852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57789 (or 57784 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 4491228852 is about 67016.6311597353. The cubic root of 4491228852 is about 1649.8902714909.

The spelling of 4491228852 in words is "four billion, four hundred ninety-one million, two hundred twenty-eight thousand, eight hundred fifty-two".