449215447 has 2 divisors, whose sum is σ = 449215448. Its totient is φ = 449215446.

The previous prime is 449215427. The next prime is 449215469. The reversal of 449215447 is 744512944.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449215447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449215427) 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, 224607723 + 224607724.

It is an arithmetic number, because the mean of its divisors is an integer number (224607724).

Almost surely, 2^449215447 is an apocalyptic number.

449215447 is a deficient number, since it is larger than the sum of its proper divisors (1).

449215447 is an equidigital number, since it uses as much as digits as its factorization.

449215447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 40.

The square root of 449215447 is about 21194.7032769982. The cubic root of 449215447 is about 765.8638323220.

The spelling of 449215447 in words is "four hundred forty-nine million, two hundred fifteen thousand, four hundred forty-seven".