8861398208 has 56 divisors (see below), whose sum is σ = 19149913440. Its totient is φ = 4043888640.

The previous prime is 8861398199. The next prime is 8861398261. The reversal of 8861398208 is 8028931688.

It is a super-2 number, since 2×8861398208² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8861398208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14213 + ... + 133883.

It is an arithmetic number, because the mean of its divisors is an integer number (341962740).

Almost surely, 2^8861398208 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 8861398208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9574956720).

8861398208 is an abundant number, since it is smaller than the sum of its proper divisors (10288515232).

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

8861398208 is a wasteful number, since it uses less digits than its factorization.

8861398208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119785 (or 119775 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 53.

The square root of 8861398208 is about 94134.9999097041. Note that the first 4 decimals coincide. The cubic root of 8861398208 is about 2069.3506335940.

The spelling of 8861398208 in words is "eight billion, eight hundred sixty-one million, three hundred ninety-eight thousand, two hundred eight".