99889075 has 24 divisors (see below), whose sum is σ = 145521936. Its totient is φ = 67056000.

The previous prime is 99889051. The next prime is 99889087. The reversal of 99889075 is 57098899.

It is not a de Polignac number, because 99889075 - 2¹¹ = 99887027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian 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 23 ways as a sum of consecutive naturals, for example, 10396 + ... + 17545.

It is an arithmetic number, because the mean of its divisors is an integer number (6063414).

Almost surely, 2^99889075 is an apocalyptic number.

99889075 is a deficient number, since it is larger than the sum of its proper divisors (45632861).

99889075 is a wasteful number, since it uses less digits than its factorization.

99889075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27975 (or 27970 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 55.

The square root of 99889075 is about 9994.4522111019. The cubic root of 99889075 is about 463.9871971175.

The spelling of 99889075 in words is "ninety-nine million, eight hundred eighty-nine thousand, seventy-five".