434535509 has 2 divisors, whose sum is σ = 434535510. Its totient is φ = 434535508.

The previous prime is 434535457. The next prime is 434535533. The reversal of 434535509 is 905535434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426298609 + 8236900 = 20647^2 + 2870^2 .

It is a cyclic number.

It is not a de Polignac number, because 434535509 - 2²⁴ = 417758293 is a prime.

It is a super-2 number, since 2×434535509² = 377642217163778162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434555509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217267754 + 217267755.

It is an arithmetic number, because the mean of its divisors is an integer number (217267755).

Almost surely, 2^434535509 is an apocalyptic number.

It is an amenable number.

434535509 is a deficient number, since it is larger than the sum of its proper divisors (1).

434535509 is an equidigital number, since it uses as much as digits as its factorization.

434535509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 38.

The square root of 434535509 is about 20845.5153210469. The cubic root of 434535509 is about 757.4287001334.

The spelling of 434535509 in words is "four hundred thirty-four million, five hundred thirty-five thousand, five hundred nine".