99885089 has 4 divisors (see below), whose sum is σ = 102584724. Its totient is φ = 97185456.

The previous prime is 99885083. The next prime is 99885157. The reversal of 99885089 is 98058899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98058899 = 421 ⋅232919.

It can be written as a sum of positive squares in 2 ways, for example, as 67486225 + 32398864 = 8215^2 + 5692^2 .

It is a cyclic number.

It is not a de Polignac number, because 99885089 - 2⁴ = 99885073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99885083) 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, 1349762 + ... + 1349835.

It is an arithmetic number, because the mean of its divisors is an integer number (25646181).

Almost surely, 2^99885089 is an apocalyptic number.

It is an amenable number.

99885089 is a deficient number, since it is larger than the sum of its proper divisors (2699635).

99885089 is a wasteful number, since it uses less digits than its factorization.

99885089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699634.

The product of its (nonzero) digits is 1866240, while the sum is 56.

The square root of 99885089 is about 9994.2527984837. The cubic root of 99885089 is about 463.9810253462.

The spelling of 99885089 in words is "ninety-nine million, eight hundred eighty-five thousand, eighty-nine".