89087209 has 2 divisors, whose sum is σ = 89087210. Its totient is φ = 89087208.

The previous prime is 89087203. The next prime is 89087213. The reversal of 89087209 is 90278098.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82301184 + 6786025 = 9072^2 + 2605^2 .

It is a cyclic number.

It is not a de Polignac number, because 89087209 - 2⁷ = 89087081 is a prime.

It is not a weakly prime, because it can be changed into another prime (89087203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44543604 + 44543605.

It is an arithmetic number, because the mean of its divisors is an integer number (44543605).

Almost surely, 2^89087209 is an apocalyptic number.

It is an amenable number.

89087209 is a deficient number, since it is larger than the sum of its proper divisors (1).

89087209 is an equidigital number, since it uses as much as digits as its factorization.

89087209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 89087209 is about 9438.6020681031. The cubic root of 89087209 is about 446.6202918983.

The spelling of 89087209 in words is "eighty-nine million, eighty-seven thousand, two hundred nine".