449645569 has 8 divisors (see below), whose sum is σ = 459998208. Its totient is φ = 439325760.

The previous prime is 449645543. The next prime is 449645629. The reversal of 449645569 is 965546944.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449645569 is a prime.

It is a super-2 number, since 2×449645569² = 404362275442667522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449645519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20649 + ... + 36409.

It is an arithmetic number, because the mean of its divisors is an integer number (57499776).

Almost surely, 2^449645569 is an apocalyptic number.

It is an amenable number.

449645569 is a deficient number, since it is larger than the sum of its proper divisors (10352639).

449645569 is a wasteful number, since it uses less digits than its factorization.

449645569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16415.

The product of its digits is 4665600, while the sum is 52.

The square root of 449645569 is about 21204.8477712055. The cubic root of 449645569 is about 766.1081915366.

The spelling of 449645569 in words is "four hundred forty-nine million, six hundred forty-five thousand, five hundred sixty-nine".