447720223 has 2 divisors, whose sum is σ = 447720224. Its totient is φ = 447720222.

The previous prime is 447720209. The next prime is 447720253. The reversal of 447720223 is 322027744.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 447720223 - 2⁵ = 447720191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447720253) 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, 223860111 + 223860112.

It is an arithmetic number, because the mean of its divisors is an integer number (223860112).

Almost surely, 2^447720223 is an apocalyptic number.

447720223 is a deficient number, since it is larger than the sum of its proper divisors (1).

447720223 is an equidigital number, since it uses as much as digits as its factorization.

447720223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 31.

The square root of 447720223 is about 21159.4003459455. The cubic root of 447720223 is about 765.0131559672.

Adding to 447720223 its reverse (322027744), we get a palindrome (769747967).

The spelling of 447720223 in words is "four hundred forty-seven million, seven hundred twenty thousand, two hundred twenty-three".