228446089987 has 2 divisors, whose sum is σ = 228446089988. Its totient is φ = 228446089986.

The previous prime is 228446089889. The next prime is 228446090017. The reversal of 228446089987 is 789980644822.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228446089987 is a prime.

It is not a weakly prime, because it can be changed into another prime (228446089187) 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, 114223044993 + 114223044994.

It is an arithmetic number, because the mean of its divisors is an integer number (114223044994).

Almost surely, 2^228446089987 is an apocalyptic number.

228446089987 is a deficient number, since it is larger than the sum of its proper divisors (1).

228446089987 is an equidigital number, since it uses as much as digits as its factorization.

228446089987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111476736, while the sum is 67.

The spelling of 228446089987 in words is "two hundred twenty-eight billion, four hundred forty-six million, eighty-nine thousand, nine hundred eighty-seven".