465243209 has 2 divisors, whose sum is σ = 465243210. Its totient is φ = 465243208.

The previous prime is 465243203. The next prime is 465243211. The reversal of 465243209 is 902342564.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442471225 + 22771984 = 21035^2 + 4772^2 .

It is a cyclic number.

It is not a de Polignac number, because 465243209 - 2⁴ = 465243193 is a prime.

Together with 465243211, 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 (465243203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232621604 + 232621605.

It is an arithmetic number, because the mean of its divisors is an integer number (232621605).

Almost surely, 2^465243209 is an apocalyptic number.

It is an amenable number.

465243209 is a deficient number, since it is larger than the sum of its proper divisors (1).

465243209 is an equidigital number, since it uses as much as digits as its factorization.

465243209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 465243209 is about 21569.4971893181. The cubic root of 465243209 is about 774.8661351863.

The spelling of 465243209 in words is "four hundred sixty-five million, two hundred forty-three thousand, two hundred nine".