88563939444 has 72 divisors (see below), whose sum is σ = 229578535368. Its totient is φ = 28770094080.

The previous prime is 88563939437. The next prime is 88563939461. The reversal of 88563939444 is 44493936588.

88563939444 is a `hidden beast` number, since 88 + 56 + 39 + 39 + 444 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 19547395344 + 69016544100 = 139812^2 + 262710^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1350994 + ... + 1415030.

It is an arithmetic number, because the mean of its divisors is an integer number (3188590769).

Almost surely, 2^88563939444 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 88563939444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114789267684).

88563939444 is an abundant number, since it is smaller than the sum of its proper divisors (141014595924).

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

88563939444 is a wasteful number, since it uses less digits than its factorization.

88563939444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65025 (or 65020 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 63.

The spelling of 88563939444 in words is "eighty-eight billion, five hundred sixty-three million, nine hundred thirty-nine thousand, four hundred forty-four".