447224149 has 2 divisors, whose sum is σ = 447224150. Its totient is φ = 447224148.

The previous prime is 447224137. The next prime is 447224153. The reversal of 447224149 is 941422744.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440370225 + 6853924 = 20985^2 + 2618^2 .

It is a cyclic number.

It is not a de Polignac number, because 447224149 - 2¹¹ = 447222101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447224119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223612074 + 223612075.

It is an arithmetic number, because the mean of its divisors is an integer number (223612075).

Almost surely, 2^447224149 is an apocalyptic number.

It is an amenable number.

447224149 is a deficient number, since it is larger than the sum of its proper divisors (1).

447224149 is an equidigital number, since it uses as much as digits as its factorization.

447224149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 37.

The square root of 447224149 is about 21147.6747894420. The cubic root of 447224149 is about 764.7305066948.

The spelling of 447224149 in words is "four hundred forty-seven million, two hundred twenty-four thousand, one hundred forty-nine".