224439997 has 2 divisors, whose sum is σ = 224439998. Its totient is φ = 224439996.

The previous prime is 224439991. The next prime is 224440009. The reversal of 224439997 is 799934422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186568281 + 37871716 = 13659^2 + 6154^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224439997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 224439997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224439991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112219998 + 112219999.

It is an arithmetic number, because the mean of its divisors is an integer number (112219999).

Almost surely, 2^224439997 is an apocalyptic number.

It is an amenable number.

224439997 is a deficient number, since it is larger than the sum of its proper divisors (1).

224439997 is an equidigital number, since it uses as much as digits as its factorization.

224439997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 49.

The square root of 224439997 is about 14981.3216039173. The cubic root of 224439997 is about 607.7151801419.

The spelling of 224439997 in words is "two hundred twenty-four million, four hundred thirty-nine thousand, nine hundred ninety-seven".