228234869 has 2 divisors, whose sum is σ = 228234870. Its totient is φ = 228234868.

The previous prime is 228234863. The next prime is 228234883. The reversal of 228234869 is 968432822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227104900 + 1129969 = 15070^2 + 1063^2 .

It is a cyclic number.

It is not a de Polignac number, because 228234869 - 2⁸ = 228234613 is a prime.

It is a super-2 number, since 2×228234869² = 104182310854894322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228234863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114117434 + 114117435.

It is an arithmetic number, because the mean of its divisors is an integer number (114117435).

Almost surely, 2^228234869 is an apocalyptic number.

It is an amenable number.

228234869 is a deficient number, since it is larger than the sum of its proper divisors (1).

228234869 is an equidigital number, since it uses as much as digits as its factorization.

228234869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 44.

The square root of 228234869 is about 15107.4441584273. Note that the first 3 decimals coincide. The cubic root of 228234869 is about 611.1211746136.

The spelling of 228234869 in words is "two hundred twenty-eight million, two hundred thirty-four thousand, eight hundred sixty-nine".