89351209 has 2 divisors, whose sum is σ = 89351210. Its totient is φ = 89351208.

The previous prime is 89351203. The next prime is 89351257. The reversal of 89351209 is 90215398.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86211225 + 3139984 = 9285^2 + 1772^2 .

It is a cyclic number.

It is not a de Polignac number, because 89351209 - 2⁷ = 89351081 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89351203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44675604 + 44675605.

It is an arithmetic number, because the mean of its divisors is an integer number (44675605).

Almost surely, 2^89351209 is an apocalyptic number.

It is an amenable number.

89351209 is a deficient number, since it is larger than the sum of its proper divisors (1).

89351209 is an equidigital number, since it uses as much as digits as its factorization.

89351209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 89351209 is about 9452.5768444377. The cubic root of 89351209 is about 447.0610266230.

The spelling of 89351209 in words is "eighty-nine million, three hundred fifty-one thousand, two hundred nine".