99688398 has 16 divisors (see below), whose sum is σ = 199584336. Its totient is φ = 33194880.

The previous prime is 99688373. The next prime is 99688411. The reversal of 99688398 is 89388699.

It is a congruent number.

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, 2011 + ... + 14262.

It is an arithmetic number, because the mean of its divisors is an integer number (12474021).

Almost surely, 2^99688398 is an apocalyptic number.

99688398 is an abundant number, since it is smaller than the sum of its proper divisors (99895938).

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

99688398 is a wasteful number, since it uses less digits than its factorization.

99688398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17299.

The product of its digits is 6718464, while the sum is 60.

The square root of 99688398 is about 9984.4077440778. The cubic root of 99688398 is about 463.6762722838.

The spelling of 99688398 in words is "ninety-nine million, six hundred eighty-eight thousand, three hundred ninety-eight".