99887388740 has 12 divisors (see below), whose sum is σ = 209763516396. Its totient is φ = 39954955488.

The previous prime is 99887388707. The next prime is 99887388743. The reversal of 99887388740 is 4788378899.

It can be written as a sum of positive squares in 2 ways, for example, as 15547097344 + 84340291396 = 124688^2 + 290414^2 .

It is not an unprimeable number, because it can be changed into a prime (99887388743) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2497184699 + ... + 2497184738.

It is an arithmetic number, because the mean of its divisors is an integer number (17480293033).

Almost surely, 2^99887388740 is an apocalyptic number.

It is an amenable number.

99887388740 is an abundant number, since it is smaller than the sum of its proper divisors (109876127656).

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

99887388740 is a wasteful number, since it uses less digits than its factorization.

99887388740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4994369446 (or 4994369444 counting only the distinct ones).

The product of its (nonzero) digits is 195084288, while the sum is 71.

The spelling of 99887388740 in words is "ninety-nine billion, eight hundred eighty-seven million, three hundred eighty-eight thousand, seven hundred forty".