99916638 has 8 divisors (see below), whose sum is σ = 199833288. Its totient is φ = 33305544.

The previous prime is 99916637. The next prime is 99916639. The reversal of 99916638 is 83661999.

It is an interprime number because it is at equal distance from previous prime (99916637) and next prime (99916639).

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

99916638 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99916637) 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, 8326381 + ... + 8326392.

It is an arithmetic number, because the mean of its divisors is an integer number (24979161).

Almost surely, 2^99916638 is an apocalyptic number.

99916638 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.

99916638 is a wasteful number, since it uses less digits than its factorization.

99916638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16652778.

The product of its digits is 629856, while the sum is 51.

The square root of 99916638 is about 9995.8310309849. The cubic root of 99916638 is about 464.0298701292.

The spelling of 99916638 in words is "ninety-nine million, nine hundred sixteen thousand, six hundred thirty-eight".