434321009 has 2 divisors, whose sum is σ = 434321010. Its totient is φ = 434321008.

The previous prime is 434320993. The next prime is 434321011. The reversal of 434321009 is 900123434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 433264225 + 1056784 = 20815^2 + 1028^2 .

It is a cyclic number.

It is not a de Polignac number, because 434321009 - 2⁴ = 434320993 is a prime.

Together with 434321011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (434321039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217160504 + 217160505.

It is an arithmetic number, because the mean of its divisors is an integer number (217160505).

Almost surely, 2^434321009 is an apocalyptic number.

It is an amenable number.

434321009 is a deficient number, since it is larger than the sum of its proper divisors (1).

434321009 is an equidigital number, since it uses as much as digits as its factorization.

434321009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 434321009 is about 20840.3696944176. The cubic root of 434321009 is about 757.3040496401.

It can be divided in two parts, 4343 and 21009, that added together give a palindrome (25352).

The spelling of 434321009 in words is "four hundred thirty-four million, three hundred twenty-one thousand, nine".