228416989 has 8 divisors (see below), whose sum is σ = 233976512. Its totient is φ = 222868800.

The previous prime is 228416977. The next prime is 228417017. The reversal of 228416989 is 989614822.

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

It is a cyclic number.

It is not a de Polignac number, because 228416989 - 2⁹ = 228416477 is a prime.

It is a super-2 number, since 2×228416989² = 104348641727652242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228416939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49432 + ... + 53854.

It is an arithmetic number, because the mean of its divisors is an integer number (29247064).

Almost surely, 2^228416989 is an apocalyptic number.

It is an amenable number.

228416989 is a deficient number, since it is larger than the sum of its proper divisors (5559523).

228416989 is a wasteful number, since it uses less digits than its factorization.

228416989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5667.

The product of its digits is 497664, while the sum is 49.

The square root of 228416989 is about 15113.4704485767. The cubic root of 228416989 is about 611.2836794325.

The spelling of 228416989 in words is "two hundred twenty-eight million, four hundred sixteen thousand, nine hundred eighty-nine".