449040065 has 4 divisors (see below), whose sum is σ = 538848084. Its totient is φ = 359232048.

The previous prime is 449040047. The next prime is 449040071. The reversal of 449040065 is 560040944.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 234212416 + 214827649 = 15304^2 + 14657^2 .

It is a cyclic number.

It is not a de Polignac number, because 449040065 - 2⁸ = 449039809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44904002 + ... + 44904011.

It is an arithmetic number, because the mean of its divisors is an integer number (134712021).

Almost surely, 2^449040065 is an apocalyptic number.

It is an amenable number.

449040065 is a deficient number, since it is larger than the sum of its proper divisors (89808019).

449040065 is an equidigital number, since it uses as much as digits as its factorization.

449040065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89808018.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 449040065 is about 21190.5654714545. The cubic root of 449040065 is about 765.7641502241.

The spelling of 449040065 in words is "four hundred forty-nine million, forty thousand, sixty-five".