89605169 has 2 divisors, whose sum is σ = 89605170. Its totient is φ = 89605168.

The previous prime is 89605151. The next prime is 89605183. The reversal of 89605169 is 96150698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89491600 + 113569 = 9460^2 + 337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89605169 is a prime.

It is a super-2 number, since 2×89605169² = 16058172623037122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89605189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44802584 + 44802585.

It is an arithmetic number, because the mean of its divisors is an integer number (44802585).

Almost surely, 2^89605169 is an apocalyptic number.

It is an amenable number.

89605169 is a deficient number, since it is larger than the sum of its proper divisors (1).

89605169 is an equidigital number, since it uses as much as digits as its factorization.

89605169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 89605169 is about 9466.0006866681. Note that the first 3 decimals coincide. The cubic root of 89605169 is about 447.4841815825.

The spelling of 89605169 in words is "eighty-nine million, six hundred five thousand, one hundred sixty-nine".