99875 has 16 divisors (see below), whose sum is σ = 134784. Its totient is φ = 73600.

The previous prime is 99871. The next prime is 99877. The reversal of 99875 is 57899.

It is not a de Polignac number, because 99875 - 2² = 99871 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a zygodrome in base 5.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99875.

It is not an unprimeable number, because it can be changed into a prime (99871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2102 + ... + 2148.

It is an arithmetic number, because the mean of its divisors is an integer number (8424).

2⁹⁹⁸⁷⁵ is an apocalyptic number.

99875 is a deficient number, since it is larger than the sum of its proper divisors (34909).

99875 is a wasteful number, since it uses less digits than its factorization.

99875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 69 counting only the distinct ones).

The product of its digits is 22680, while the sum is 38.

The square root of 99875 is about 316.0300618612. The cubic root of 99875 is about 46.3965403187.

The spelling of 99875 in words is "ninety-nine thousand, eight hundred seventy-five".