228446089889 has 2 divisors, whose sum is σ = 228446089890. Its totient is φ = 228446089888.

The previous prime is 228446089849. The next prime is 228446089987. The reversal of 228446089889 is 988980644822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208506390625 + 19939699264 = 456625^2 + 141208^2 .

It is a cyclic number.

It is not a de Polignac number, because 228446089889 - 2¹² = 228446085793 is a prime.

It is not a weakly prime, because it can be changed into another prime (228446089819) 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, 114223044944 + 114223044945.

It is an arithmetic number, because the mean of its divisors is an integer number (114223044945).

Almost surely, 2^228446089889 is an apocalyptic number.

It is an amenable number.

228446089889 is a deficient number, since it is larger than the sum of its proper divisors (1).

228446089889 is an equidigital number, since it uses as much as digits as its factorization.

228446089889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127401984, while the sum is 68.

The spelling of 228446089889 in words is "two hundred twenty-eight billion, four hundred forty-six million, eighty-nine thousand, eight hundred eighty-nine".