228939 has 12 divisors (see below), whose sum is σ = 328104. Its totient is φ = 141504.

The previous prime is 228929. The next prime is 228953. The reversal of 228939 is 939822.

It is not a de Polignac number, because 228939 - 2⁴ = 228923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3384 + ... + 3450.

It is an arithmetic number, because the mean of its divisors is an integer number (27342).

2²²⁸⁹³⁹ is an apocalyptic number.

228939 is a deficient number, since it is larger than the sum of its proper divisors (99165).

228939 is an equidigital number, since it uses as much as digits as its factorization.

228939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 87 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 228939 is about 478.4757047124. The cubic root of 228939 is about 61.1748989292.

The spelling of 228939 in words is "two hundred twenty-eight thousand, nine hundred thirty-nine".