228851489 has 2 divisors, whose sum is σ = 228851490. Its totient is φ = 228851488.

The previous prime is 228851473. The next prime is 228851573. The reversal of 228851489 is 984158822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120275089 + 108576400 = 10967^2 + 10420^2 .

It is a cyclic number.

It is not a de Polignac number, because 228851489 - 2⁴ = 228851473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228851089) 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 as a sum of consecutive naturals, namely, 114425744 + 114425745.

It is an arithmetic number, because the mean of its divisors is an integer number (114425745).

Almost surely, 2^228851489 is an apocalyptic number.

It is an amenable number.

228851489 is a deficient number, since it is larger than the sum of its proper divisors (1).

228851489 is an equidigital number, since it uses as much as digits as its factorization.

228851489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 368640, while the sum is 47.

The square root of 228851489 is about 15127.8382130429. The cubic root of 228851489 is about 611.6710331721.

The spelling of 228851489 in words is "two hundred twenty-eight million, eight hundred fifty-one thousand, four hundred eighty-nine".