30066209 has 2 divisors, whose sum is σ = 30066210. Its totient is φ = 30066208.

The previous prime is 30066137. The next prime is 30066241. The reversal of 30066209 is 90266003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15626209 + 14440000 = 3953^2 + 3800^2 .

It is a cyclic number.

It is not a de Polignac number, because 30066209 - 2¹² = 30062113 is a prime.

It is not a weakly prime, because it can be changed into another prime (30066259) 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, 15033104 + 15033105.

It is an arithmetic number, because the mean of its divisors is an integer number (15033105).

Almost surely, 2^30066209 is an apocalyptic number.

It is an amenable number.

30066209 is a deficient number, since it is larger than the sum of its proper divisors (1).

30066209 is an equidigital number, since it uses as much as digits as its factorization.

30066209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 30066209 is about 5483.2662711198. The cubic root of 30066209 is about 310.9516679268.

The spelling of 30066209 in words is "thirty million, sixty-six thousand, two hundred nine".