99998900 has 36 divisors (see below), whose sum is σ = 228422880. Its totient is φ = 37893600.

The previous prime is 99998891. The next prime is 99998909. The reversal of 99998900 is 989999.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99998891) and next prime (99998909).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99998909) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 24416 + ... + 28215.

It is an arithmetic number, because the mean of its divisors is an integer number (6345080).

Almost surely, 2^99998900 is an apocalyptic number.

It is an amenable number.

99998900 is an abundant number, since it is smaller than the sum of its proper divisors (128423980).

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

99998900 is a wasteful number, since it uses less digits than its factorization.

99998900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52664 (or 52657 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 53.

The square root of 99998900 is about 9999.9449998487. The cubic root of 99998900 is about 464.1571814391.

It can be divided in two parts, 999 and 98900, that added together give a palindrome (99899).

The spelling of 99998900 in words is "ninety-nine million, nine hundred ninety-eight thousand, nine hundred".