449817 has 4 divisors (see below), whose sum is σ = 599760. Its totient is φ = 299876.

The previous prime is 449807. The next prime is 449821. The reversal of 449817 is 718944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 449817 - 2⁷ = 449689 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (449807) 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 3 ways as a sum of consecutive naturals, for example, 74967 + ... + 74972.

It is an arithmetic number, because the mean of its divisors is an integer number (149940).

2⁴⁴⁹⁸¹⁷ is an apocalyptic number.

It is an amenable number.

449817 is a deficient number, since it is larger than the sum of its proper divisors (149943).

449817 is a wasteful number, since it uses less digits than its factorization.

449817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149942.

The product of its digits is 8064, while the sum is 33.

The square root of 449817 is about 670.6839792331. The cubic root of 449817 is about 76.6205540808.

The spelling of 449817 in words is "four hundred forty-nine thousand, eight hundred seventeen".