449569 has 2 divisors, whose sum is σ = 449570. Its totient is φ = 449568.

The previous prime is 449567. The next prime is 449591. The reversal of 449569 is 965944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 439569 + 10000 = 663^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 449569 - 2¹ = 449567 is a prime.

It is a super-2 number, since 2×449569² = 404224571522, which contains 22 as substring.

Together with 449567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (449563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224784 + 224785.

It is an arithmetic number, because the mean of its divisors is an integer number (224785).

2⁴⁴⁹⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

449569 is a deficient number, since it is larger than the sum of its proper divisors (1).

449569 is an equidigital number, since it uses as much as digits as its factorization.

449569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 449569 is about 670.4990678592. The cubic root of 449569 is about 76.6064702863.

The spelling of 449569 in words is "four hundred forty-nine thousand, five hundred sixty-nine".