449917 has 8 divisors (see below), whose sum is σ = 494424. Its totient is φ = 406848.

The previous prime is 449879. The next prime is 449921. The reversal of 449917 is 719944.

It can be written as a sum of positive squares in 4 ways, for example, as 12996 + 436921 = 114^2 + 661^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-449917 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363 + ... + 1015.

It is an arithmetic number, because the mean of its divisors is an integer number (61803).

2⁴⁴⁹⁹¹⁷ is an apocalyptic number.

It is an amenable number.

449917 is a deficient number, since it is larger than the sum of its proper divisors (44507).

449917 is a wasteful number, since it uses less digits than its factorization.

449917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719.

The product of its digits is 9072, while the sum is 34.

The square root of 449917 is about 670.7585258497. The cubic root of 449917 is about 76.6262315657.

The spelling of 449917 in words is "four hundred forty-nine thousand, nine hundred seventeen".