34020209 has 2 divisors, whose sum is σ = 34020210. Its totient is φ = 34020208.

The previous prime is 34020193. The next prime is 34020221. The reversal of 34020209 is 90202043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31888609 + 2131600 = 5647^2 + 1460^2 .

It is a cyclic number.

It is not a de Polignac number, because 34020209 - 2⁴ = 34020193 is a prime.

It is not a weakly prime, because it can be changed into another prime (34020229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17010104 + 17010105.

It is an arithmetic number, because the mean of its divisors is an integer number (17010105).

Almost surely, 2^34020209 is an apocalyptic number.

It is an amenable number.

34020209 is a deficient number, since it is larger than the sum of its proper divisors (1).

34020209 is an equidigital number, since it uses as much as digits as its factorization.

34020209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 34020209 is about 5832.6845448730. The cubic root of 34020209 is about 324.0253530179.

The spelling of 34020209 in words is "thirty-four million, twenty thousand, two hundred nine".