99945888 has 72 divisors (see below), whose sum is σ = 305206272. Its totient is φ = 28554624.

The previous prime is 99945851. The next prime is 99945893. The reversal of 99945888 is 88854999.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5920 + ... + 15327.

It is an arithmetic number, because the mean of its divisors is an integer number (4238976).

Almost surely, 2^99945888 is an apocalyptic number.

99945888 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

99945888 is an abundant number, since it is smaller than the sum of its proper divisors (205260384).

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

99945888 is a wasteful number, since it uses less digits than its factorization.

99945888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21274 (or 21259 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 60.

The square root of 99945888 is about 9997.2940338874. The cubic root of 99945888 is about 464.0751463706.

The spelling of 99945888 in words is "ninety-nine million, nine hundred forty-five thousand, eight hundred eighty-eight".