228472589 has 2 divisors, whose sum is σ = 228472590. Its totient is φ = 228472588.

The previous prime is 228472583. The next prime is 228472591. The reversal of 228472589 is 985274822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226743364 + 1729225 = 15058^2 + 1315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228472589 is a prime.

Together with 228472591, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228472583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114236294 + 114236295.

It is an arithmetic number, because the mean of its divisors is an integer number (114236295).

Almost surely, 2^228472589 is an apocalyptic number.

It is an amenable number.

228472589 is a deficient number, since it is larger than the sum of its proper divisors (1).

228472589 is an equidigital number, since it uses as much as digits as its factorization.

228472589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 47.

The square root of 228472589 is about 15115.3097553441. The cubic root of 228472589 is about 611.3332738394. Note that the first 3 decimals are identical.

The spelling of 228472589 in words is "two hundred twenty-eight million, four hundred seventy-two thousand, five hundred eighty-nine".