456648209 has 2 divisors, whose sum is σ = 456648210. Its totient is φ = 456648208.

The previous prime is 456648173. The next prime is 456648251. The reversal of 456648209 is 902846654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242113600 + 214534609 = 15560^2 + 14647^2 .

It is a cyclic number.

It is not a de Polignac number, because 456648209 - 2¹² = 456644113 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 456648209.

It is not a weakly prime, because it can be changed into another prime (456648289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228324104 + 228324105.

It is an arithmetic number, because the mean of its divisors is an integer number (228324105).

Almost surely, 2^456648209 is an apocalyptic number.

It is an amenable number.

456648209 is a deficient number, since it is larger than the sum of its proper divisors (1).

456648209 is an equidigital number, since it uses as much as digits as its factorization.

456648209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 456648209 is about 21369.3286979259. The cubic root of 456648209 is about 770.0647660146.

The spelling of 456648209 in words is "four hundred fifty-six million, six hundred forty-eight thousand, two hundred nine".