99889868 has 12 divisors (see below), whose sum is σ = 188254080. Its totient is φ = 46102992.

The previous prime is 99889861. The next prime is 99889873. The reversal of 99889868 is 86898899.

It is not an unprimeable number, because it can be changed into a prime (99889861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960428 + ... + 960531.

It is an arithmetic number, because the mean of its divisors is an integer number (15687840).

Almost surely, 2^99889868 is an apocalyptic number.

It is an amenable number.

99889868 is a deficient number, since it is larger than the sum of its proper divisors (88364212).

99889868 is a wasteful number, since it uses less digits than its factorization.

99889868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920976 (or 1920974 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 65.

The square root of 99889868 is about 9994.4918830324. The cubic root of 99889868 is about 463.9884249491.

The spelling of 99889868 in words is "ninety-nine million, eight hundred eighty-nine thousand, eight hundred sixty-eight".