224249279 has 2 divisors, whose sum is σ = 224249280. Its totient is φ = 224249278.

The previous prime is 224249273. The next prime is 224249293. The reversal of 224249279 is 972942422.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224249279 is a prime.

It is a Sophie Germain 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 (224249273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112124639 + 112124640.

It is an arithmetic number, because the mean of its divisors is an integer number (112124640).

Almost surely, 2^224249279 is an apocalyptic number.

224249279 is a deficient number, since it is larger than the sum of its proper divisors (1).

224249279 is an equidigital number, since it uses as much as digits as its factorization.

224249279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 224249279 is about 14974.9550583633. The cubic root of 224249279 is about 607.5429959351.

The spelling of 224249279 in words is "two hundred twenty-four million, two hundred forty-nine thousand, two hundred seventy-nine".