34205609 has 2 divisors, whose sum is σ = 34205610. Its totient is φ = 34205608.

The previous prime is 34205573. The next prime is 34205629. The reversal of 34205609 is 90650243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19360000 + 14845609 = 4400^2 + 3853^2 .

It is an emirp because it is prime and its reverse (90650243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34205609 - 2¹² = 34201513 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (34205629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17102804 + 17102805.

It is an arithmetic number, because the mean of its divisors is an integer number (17102805).

Almost surely, 2^34205609 is an apocalyptic number.

It is an amenable number.

34205609 is a deficient number, since it is larger than the sum of its proper divisors (1).

34205609 is an equidigital number, since it uses as much as digits as its factorization.

34205609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 34205609 is about 5848.5561466058. The cubic root of 34205609 is about 324.6129008549.

The spelling of 34205609 in words is "thirty-four million, two hundred five thousand, six hundred nine".