89220217 has 2 divisors, whose sum is σ = 89220218. Its totient is φ = 89220216.

The previous prime is 89220193. The next prime is 89220221. The reversal of 89220217 is 71202298.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65755881 + 23464336 = 8109^2 + 4844^2 .

It is a cyclic number.

It is not a de Polignac number, because 89220217 - 2¹¹ = 89218169 is a prime.

It is not a weakly prime, because it can be changed into another prime (89220317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44610108 + 44610109.

It is an arithmetic number, because the mean of its divisors is an integer number (44610109).

Almost surely, 2^89220217 is an apocalyptic number.

It is an amenable number.

89220217 is a deficient number, since it is larger than the sum of its proper divisors (1).

89220217 is an equidigital number, since it uses as much as digits as its factorization.

89220217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 89220217 is about 9445.6453988068. The cubic root of 89220217 is about 446.8424507370.

The spelling of 89220217 in words is "eighty-nine million, two hundred twenty thousand, two hundred seventeen".