99949998 has 8 divisors (see below), whose sum is σ = 199900008. Its totient is φ = 33316664.

The previous prime is 99949991. The next prime is 99949999. The reversal of 99949998 is 89994999.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

99949998 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99949991) 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 3 ways as a sum of consecutive naturals, for example, 8329161 + ... + 8329172.

It is an arithmetic number, because the mean of its divisors is an integer number (24987501).

Almost surely, 2^99949998 is an apocalyptic number.

99949998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

99949998 is a wasteful number, since it uses less digits than its factorization.

99949998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16658338.

The product of its digits is 17006112, while the sum is 66.

The square root of 99949998 is about 9997.4995873968. The cubic root of 99949998 is about 464.0815075551.

The spelling of 99949998 in words is "ninety-nine million, nine hundred forty-nine thousand, nine hundred ninety-eight".