449857 has 4 divisors (see below), whose sum is σ = 469440. Its totient is φ = 430276.

The previous prime is 449851. The next prime is 449879. The reversal of 449857 is 758944.

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 449857 - 2¹⁵ = 417089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449851) 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, 9757 + ... + 9802.

It is an arithmetic number, because the mean of its divisors is an integer number (117360).

2⁴⁴⁹⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

449857 is a deficient number, since it is larger than the sum of its proper divisors (19583).

449857 is a wasteful number, since it uses less digits than its factorization.

449857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19582.

The product of its digits is 40320, while the sum is 37.

The square root of 449857 is about 670.7137988740. The cubic root of 449857 is about 76.6228251758.

The spelling of 449857 in words is "four hundred forty-nine thousand, eight hundred fifty-seven".