224440991 has 2 divisors, whose sum is σ = 224440992. Its totient is φ = 224440990.

The previous prime is 224440981. The next prime is 224441033. The reversal of 224440991 is 199044422.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224440991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224440981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112220495 + 112220496.

It is an arithmetic number, because the mean of its divisors is an integer number (112220496).

Almost surely, 2^224440991 is an apocalyptic number.

224440991 is a deficient number, since it is larger than the sum of its proper divisors (1).

224440991 is an equidigital number, since it uses as much as digits as its factorization.

224440991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 224440991 is about 14981.3547785239. The cubic root of 224440991 is about 607.7160772904.

The spelling of 224440991 in words is "two hundred twenty-four million, four hundred forty thousand, nine hundred ninety-one".