99841988 has 24 divisors (see below), whose sum is σ = 183297408. Its totient is φ = 47494656.

The previous prime is 99841967. The next prime is 99841991. The reversal of 99841988 is 88914899.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14945 + ... + 20567.

It is an arithmetic number, because the mean of its divisors is an integer number (7637392).

Almost surely, 2^99841988 is an apocalyptic number.

It is an amenable number.

99841988 is a deficient number, since it is larger than the sum of its proper divisors (83455420).

99841988 is a wasteful number, since it uses less digits than its factorization.

99841988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5843 (or 5841 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 56.

The square root of 99841988 is about 9992.0962765578. The cubic root of 99841988 is about 463.9142789029.

The spelling of 99841988 in words is "ninety-nine million, eight hundred forty-one thousand, nine hundred eighty-eight".