224403997 has 2 divisors, whose sum is σ = 224403998. Its totient is φ = 224403996.

The previous prime is 224403979. The next prime is 224404013. The reversal of 224403997 is 799304422.

Together with previous prime (224403979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209496676 + 14907321 = 14474^2 + 3861^2 .

It is a cyclic number.

It is not a de Polignac number, because 224403997 - 2⁷ = 224403869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224403967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112201998 + 112201999.

It is an arithmetic number, because the mean of its divisors is an integer number (112201999).

Almost surely, 2^224403997 is an apocalyptic number.

It is an amenable number.

224403997 is a deficient number, since it is larger than the sum of its proper divisors (1).

224403997 is an equidigital number, since it uses as much as digits as its factorization.

224403997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 224403997 is about 14980.1200595990. The cubic root of 224403997 is about 607.6826860580.

The spelling of 224403997 in words is "two hundred twenty-four million, four hundred three thousand, nine hundred ninety-seven".