430040209 has 2 divisors, whose sum is σ = 430040210. Its totient is φ = 430040208.

The previous prime is 430040189. The next prime is 430040239. The reversal of 430040209 is 902040034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242487184 + 187553025 = 15572^2 + 13695^2 .

It is a cyclic number.

It is not a de Polignac number, because 430040209 - 2⁷ = 430040081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 430040209.

It is not a weakly prime, because it can be changed into another prime (430040239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215020104 + 215020105.

It is an arithmetic number, because the mean of its divisors is an integer number (215020105).

Almost surely, 2^430040209 is an apocalyptic number.

It is an amenable number.

430040209 is a deficient number, since it is larger than the sum of its proper divisors (1).

430040209 is an equidigital number, since it uses as much as digits as its factorization.

430040209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 430040209 is about 20737.4108557457. The cubic root of 430040209 is about 754.8077571444.

The spelling of 430040209 in words is "four hundred thirty million, forty thousand, two hundred nine".