434534209 has 2 divisors, whose sum is σ = 434534210. Its totient is φ = 434534208.

The previous prime is 434534197. The next prime is 434534249. The reversal of 434534209 is 902435434.

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., 307476225 + 127057984 = 17535^2 + 11272^2 .

It is a cyclic number.

It is not a de Polignac number, because 434534209 - 2¹⁹ = 434009921 is a prime.

It is not a weakly prime, because it can be changed into another prime (434534249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217267104 + 217267105.

It is an arithmetic number, because the mean of its divisors is an integer number (217267105).

Almost surely, 2^434534209 is an apocalyptic number.

It is an amenable number.

434534209 is a deficient number, since it is larger than the sum of its proper divisors (1).

434534209 is an equidigital number, since it uses as much as digits as its factorization.

434534209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 434534209 is about 20845.4841392566. The cubic root of 434534209 is about 757.4279447994.

The spelling of 434534209 in words is "four hundred thirty-four million, five hundred thirty-four thousand, two hundred nine".