99988871 has 4 divisors (see below), whose sum is σ = 100012200. Its totient is φ = 99965544.

The previous prime is 99988859. The next prime is 99988879. The reversal of 99988871 is 17888999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99988871 - 2⁶ = 99988807 is a prime.

It is a Duffinian number.

Its product of digits (2612736) is a multiple of the sum of its prime divisors (23328).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 99988871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99988879) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3176 + ... + 14493.

It is an arithmetic number, because the mean of its divisors is an integer number (25003050).

Almost surely, 2^99988871 is an apocalyptic number.

99988871 is a deficient number, since it is larger than the sum of its proper divisors (23329).

99988871 is a wasteful number, since it uses less digits than its factorization.

99988871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23328.

The product of its digits is 2612736, while the sum is 59.

The square root of 99988871 is about 9999.4435345173. The cubic root of 99988871 is about 464.1416639751.

The spelling of 99988871 in words is "ninety-nine million, nine hundred eighty-eight thousand, eight hundred seventy-one".