451223449 has 2 divisors, whose sum is σ = 451223450. Its totient is φ = 451223448.

The previous prime is 451223411. The next prime is 451223477. The reversal of 451223449 is 944322154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 451137600 + 85849 = 21240^2 + 293^2 .

It is a cyclic number.

It is not a de Polignac number, because 451223449 - 2¹³ = 451215257 is a prime.

It is not a weakly prime, because it can be changed into another prime (451226449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225611724 + 225611725.

It is an arithmetic number, because the mean of its divisors is an integer number (225611725).

Almost surely, 2^451223449 is an apocalyptic number.

It is an amenable number.

451223449 is a deficient number, since it is larger than the sum of its proper divisors (1).

451223449 is an equidigital number, since it uses as much as digits as its factorization.

451223449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 34.

The square root of 451223449 is about 21242.0208313616. The cubic root of 451223449 is about 767.0032784200.

The spelling of 451223449 in words is "four hundred fifty-one million, two hundred twenty-three thousand, four hundred forty-nine".