224847209 has 2 divisors, whose sum is σ = 224847210. Its totient is φ = 224847208.

The previous prime is 224847191. The next prime is 224847251. The reversal of 224847209 is 902748422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193989184 + 30858025 = 13928^2 + 5555^2 .

It is a cyclic number.

It is not a de Polignac number, because 224847209 - 2²⁴ = 208069993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (224847269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112423604 + 112423605.

It is an arithmetic number, because the mean of its divisors is an integer number (112423605).

Almost surely, 2^224847209 is an apocalyptic number.

It is an amenable number.

224847209 is a deficient number, since it is larger than the sum of its proper divisors (1).

224847209 is an equidigital number, since it uses as much as digits as its factorization.

224847209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 224847209 is about 14994.9061017400. The cubic root of 224847209 is about 608.0824934597.

The spelling of 224847209 in words is "two hundred twenty-four million, eight hundred forty-seven thousand, two hundred nine".