99998808 has 192 divisors, whose sum is σ = 324817920. Its totient is φ = 25401600.

The previous prime is 99998797. The next prime is 99998819. The reversal of 99998808 is 80889999.

It is an interprime number because it is at equal distance from previous prime (99998797) and next prime (99998819).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 473823 + ... + 474033.

It is an arithmetic number, because the mean of its divisors is an integer number (1691760).

Almost surely, 2^99998808 is an apocalyptic number.

99998808 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99998808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162408960).

99998808 is an abundant number, since it is smaller than the sum of its proper divisors (224819112).

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

99998808 is a wasteful number, since it uses less digits than its factorization.

99998808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 60.

The square root of 99998808 is about 9999.9403998224. The cubic root of 99998808 is about 464.1570390960.

The spelling of 99998808 in words is "ninety-nine million, nine hundred ninety-eight thousand, eight hundred eight".