228917489 has 8 divisors (see below), whose sum is σ = 230044320. Its totient is φ = 227794336.

The previous prime is 228917467. The next prime is 228917497. The reversal of 228917489 is 984719822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228917489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228917449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347042 + ... + 347700.

It is an arithmetic number, because the mean of its divisors is an integer number (28755540).

Almost surely, 2^228917489 is an apocalyptic number.

It is an amenable number.

228917489 is a deficient number, since it is larger than the sum of its proper divisors (1126831).

228917489 is an equidigital number, since it uses as much as digits as its factorization.

228917489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839.

The product of its digits is 580608, while the sum is 50.

The square root of 228917489 is about 15130.0194646273. The cubic root of 228917489 is about 611.7298288101.

The spelling of 228917489 in words is "two hundred twenty-eight million, nine hundred seventeen thousand, four hundred eighty-nine".