449215469 has 2 divisors, whose sum is σ = 449215470. Its totient is φ = 449215468.

The previous prime is 449215447. The next prime is 449215489. The reversal of 449215469 is 964512944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 413634244 + 35581225 = 20338^2 + 5965^2 .

It is a cyclic number.

It is not a de Polignac number, because 449215469 - 2⁸ = 449215213 is a prime.

It is a super-2 number, since 2×449215469² = 403589075177779922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449215489) 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, 224607734 + 224607735.

It is an arithmetic number, because the mean of its divisors is an integer number (224607735).

Almost surely, 2^449215469 is an apocalyptic number.

It is an amenable number.

449215469 is a deficient number, since it is larger than the sum of its proper divisors (1).

449215469 is an equidigital number, since it uses as much as digits as its factorization.

449215469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 44.

The square root of 449215469 is about 21194.7037959958. The cubic root of 449215469 is about 765.8638448246.

The spelling of 449215469 in words is "four hundred forty-nine million, two hundred fifteen thousand, four hundred sixty-nine".