228899 has 4 divisors (see below), whose sum is σ = 249720. Its totient is φ = 208080.

The previous prime is 228887. The next prime is 228901. The reversal of 228899 is 998822.

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 228899 - 2⁴ = 228883 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (228829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10394 + ... + 10415.

It is an arithmetic number, because the mean of its divisors is an integer number (62430).

2²²⁸⁸⁹⁹ is an apocalyptic number.

228899 is a deficient number, since it is larger than the sum of its proper divisors (20821).

228899 is a wasteful number, since it uses less digits than its factorization.

228899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20820.

The product of its digits is 20736, while the sum is 38.

The square root of 228899 is about 478.4339034809. The cubic root of 228899 is about 61.1713359153.

The spelling of 228899 in words is "two hundred twenty-eight thousand, eight hundred ninety-nine".