449996689 has 4 divisors (see below), whose sum is σ = 460972260. Its totient is φ = 439021120.

The previous prime is 449996653. The next prime is 449996693. The reversal of 449996689 is 986699944.

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 12852225 + 437144464 = 3585^2 + 20908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449996689 is a prime.

It is a super-2 number, since 2×449996689² = 404994040221925442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 449996689.

It is not an unprimeable number, because it can be changed into a prime (449996489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5487724 + ... + 5487805.

It is an arithmetic number, because the mean of its divisors is an integer number (115243065).

Almost surely, 2^449996689 is an apocalyptic number.

It is an amenable number.

449996689 is a deficient number, since it is larger than the sum of its proper divisors (10975571).

449996689 is a wasteful number, since it uses less digits than its factorization.

449996689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10975570.

The product of its digits is 30233088, while the sum is 64.

The square root of 449996689 is about 21213.1253944345. The cubic root of 449996689 is about 766.3075529441.

The spelling of 449996689 in words is "four hundred forty-nine million, nine hundred ninety-six thousand, six hundred eighty-nine".