224957309 has 2 divisors, whose sum is σ = 224957310. Its totient is φ = 224957308.

The previous prime is 224957279. The next prime is 224957333. The reversal of 224957309 is 903759422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210540100 + 14417209 = 14510^2 + 3797^2 .

It is a cyclic number.

It is not a de Polignac number, because 224957309 - 2²⁰ = 223908733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224957339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112478654 + 112478655.

It is an arithmetic number, because the mean of its divisors is an integer number (112478655).

Almost surely, 2^224957309 is an apocalyptic number.

It is an amenable number.

224957309 is a deficient number, since it is larger than the sum of its proper divisors (1).

224957309 is an equidigital number, since it uses as much as digits as its factorization.

224957309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 224957309 is about 14998.5768991595. The cubic root of 224957309 is about 608.1817296745.

The spelling of 224957309 in words is "two hundred twenty-four million, nine hundred fifty-seven thousand, three hundred nine".