824225449 has 2 divisors, whose sum is σ = 824225450. Its totient is φ = 824225448.

The previous prime is 824225371. The next prime is 824225477. The reversal of 824225449 is 944522428.

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., 751856400 + 72369049 = 27420^2 + 8507^2 .

It is a cyclic number.

It is not a de Polignac number, because 824225449 - 2⁹ = 824224937 is a prime.

It is not a weakly prime, because it can be changed into another prime (824222449) 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, 412112724 + 412112725.

It is an arithmetic number, because the mean of its divisors is an integer number (412112725).

Almost surely, 2^824225449 is an apocalyptic number.

It is an amenable number.

824225449 is a deficient number, since it is larger than the sum of its proper divisors (1).

824225449 is an equidigital number, since it uses as much as digits as its factorization.

824225449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 40.

The square root of 824225449 is about 28709.3268642788. The cubic root of 824225449 is about 937.5951235983.

The spelling of 824225449 in words is "eight hundred twenty-four million, two hundred twenty-five thousand, four hundred forty-nine".