99808 has 12 divisors (see below), whose sum is σ = 196560. Its totient is φ = 49888.

The previous prime is 99793. The next prime is 99809. The reversal of 99808 is 80899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99809) by changing a digit.

99808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1528 + ... + 1591.

It is an arithmetic number, because the mean of its divisors is an integer number (16380).

2⁹⁹⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

99808 is a deficient number, since it is larger than the sum of its proper divisors (96752).

99808 is a wasteful number, since it uses less digits than its factorization.

99808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129 (or 3121 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 99808 is about 315.9240415037. The cubic root of 99808 is about 46.3861631353.

The spelling of 99808 in words is "ninety-nine thousand, eight hundred eight".