224692397 has 2 divisors, whose sum is σ = 224692398. Its totient is φ = 224692396.

The previous prime is 224692373. The next prime is 224692409. The reversal of 224692397 is 793296422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201469636 + 23222761 = 14194^2 + 4819^2 .

It is a cyclic number.

It is not a de Polignac number, because 224692397 - 2⁸ = 224692141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224692327) 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, 112346198 + 112346199.

It is an arithmetic number, because the mean of its divisors is an integer number (112346199).

Almost surely, 2^224692397 is an apocalyptic number.

It is an amenable number.

224692397 is a deficient number, since it is larger than the sum of its proper divisors (1).

224692397 is an equidigital number, since it uses as much as digits as its factorization.

224692397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 44.

The square root of 224692397 is about 14989.7430598393. The cubic root of 224692397 is about 607.9429022515.

The spelling of 224692397 in words is "two hundred twenty-four million, six hundred ninety-two thousand, three hundred ninety-seven".