99989448050 has 54 divisors (see below), whose sum is σ = 187756332807. Its totient is φ = 39617456480.

The previous prime is 99989448047. The next prime is 99989448059. The reversal of 99989448050 is 5084498999.

It can be written as a sum of positive squares in 5 ways, for example, as 92111643001 + 7877805049 = 303499^2 + 88757^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=223595.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99989448059) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 440482037 + ... + 440482263.

Almost surely, 2^99989448050 is an apocalyptic number.

99989448050 is a deficient number, since it is larger than the sum of its proper divisors (87766884757).

99989448050 is an equidigital number, since it uses as much as digits as its factorization.

99989448050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 65.

The spelling of 99989448050 in words is "ninety-nine billion, nine hundred eighty-nine million, four hundred forty-eight thousand, fifty".