89585569 has 2 divisors, whose sum is σ = 89585570. Its totient is φ = 89585568.

The previous prime is 89585543. The next prime is 89585581. The reversal of 89585569 is 96558598.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89113600 + 471969 = 9440^2 + 687^2 .

It is a cyclic number.

It is not a de Polignac number, because 89585569 - 2⁵ = 89585537 is a prime.

It is a super-2 number, since 2×89585569² = 16051148346107522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89585539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44792784 + 44792785.

It is an arithmetic number, because the mean of its divisors is an integer number (44792785).

Almost surely, 2^89585569 is an apocalyptic number.

It is an amenable number.

89585569 is a deficient number, since it is larger than the sum of its proper divisors (1).

89585569 is an equidigital number, since it uses as much as digits as its factorization.

89585569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888000, while the sum is 55.

The square root of 89585569 is about 9464.9653459482. The cubic root of 89585569 is about 447.4515520306.

The spelling of 89585569 in words is "eighty-nine million, five hundred eighty-five thousand, five hundred sixty-nine".