89850209 has 2 divisors, whose sum is σ = 89850210. Its totient is φ = 89850208.

The previous prime is 89850199. The next prime is 89850223. The reversal of 89850209 is 90205898.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87478609 + 2371600 = 9353^2 + 1540^2 .

It is a cyclic number.

It is not a de Polignac number, because 89850209 - 2⁴ = 89850193 is a prime.

It is not a weakly prime, because it can be changed into another prime (89850289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44925104 + 44925105.

It is an arithmetic number, because the mean of its divisors is an integer number (44925105).

Almost surely, 2^89850209 is an apocalyptic number.

It is an amenable number.

89850209 is a deficient number, since it is larger than the sum of its proper divisors (1).

89850209 is an equidigital number, since it uses as much as digits as its factorization.

89850209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 89850209 is about 9478.9350140192. The cubic root of 89850209 is about 447.8917165618.

The spelling of 89850209 in words is "eighty-nine million, eight hundred fifty thousand, two hundred nine".