434906009 has 2 divisors, whose sum is σ = 434906010. Its totient is φ = 434906008.

The previous prime is 434905997. The next prime is 434906071. The reversal of 434906009 is 900609434.

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., 337824400 + 97081609 = 18380^2 + 9853^2 .

It is a cyclic number.

It is not a de Polignac number, because 434906009 - 2²⁸ = 166470553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 434906009.

It is not a weakly prime, because it can be changed into another prime (434906209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217453004 + 217453005.

It is an arithmetic number, because the mean of its divisors is an integer number (217453005).

Almost surely, 2^434906009 is an apocalyptic number.

It is an amenable number.

434906009 is a deficient number, since it is larger than the sum of its proper divisors (1).

434906009 is an equidigital number, since it uses as much as digits as its factorization.

434906009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 434906009 is about 20854.4002311263. The cubic root of 434906009 is about 757.6439089466.

The spelling of 434906009 in words is "four hundred thirty-four million, nine hundred six thousand, nine".