99888774 has 8 divisors (see below), whose sum is σ = 199777560. Its totient is φ = 33296256.

The previous prime is 99888769. The next prime is 99888779. The reversal of 99888774 is 47788899.

It is an interprime number because it is at equal distance from previous prime (99888769) and next prime (99888779).

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

99888774 is an admirable number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99888779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8324059 + ... + 8324070.

It is an arithmetic number, because the mean of its divisors is an integer number (24972195).

Almost surely, 2^99888774 is an apocalyptic number.

99888774 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.

99888774 is a wasteful number, since it uses less digits than its factorization.

99888774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16648134.

The product of its digits is 8128512, while the sum is 60.

The square root of 99888774 is about 9994.4371527365. The cubic root of 99888774 is about 463.9867310663.

The spelling of 99888774 in words is "ninety-nine million, eight hundred eighty-eight thousand, seven hundred seventy-four".