449405569 has 2 divisors, whose sum is σ = 449405570. Its totient is φ = 449405568.

The previous prime is 449405549. The next prime is 449405581. The reversal of 449405569 is 965504944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442050625 + 7354944 = 21025^2 + 2712^2 .

It is a cyclic number.

It is not a de Polignac number, because 449405569 - 2⁹ = 449405057 is a prime.

It is a super-2 number, since 2×449405569² = 403930730896427522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (449405549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224702784 + 224702785.

It is an arithmetic number, because the mean of its divisors is an integer number (224702785).

Almost surely, 2^449405569 is an apocalyptic number.

It is an amenable number.

449405569 is a deficient number, since it is larger than the sum of its proper divisors (1).

449405569 is an equidigital number, since it uses as much as digits as its factorization.

449405569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 449405569 is about 21199.1879325601. The cubic root of 449405569 is about 765.9718629099.

The spelling of 449405569 in words is "four hundred forty-nine million, four hundred five thousand, five hundred sixty-nine".