449815 has 4 divisors (see below), whose sum is σ = 539784. Its totient is φ = 359848.

The previous prime is 449807. The next prime is 449821. The reversal of 449815 is 518944.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 449815 - 2³ = 449807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44977 + ... + 44986.

It is an arithmetic number, because the mean of its divisors is an integer number (134946).

2⁴⁴⁹⁸¹⁵ is an apocalyptic number.

449815 is a deficient number, since it is larger than the sum of its proper divisors (89969).

449815 is an equidigital number, since it uses as much as digits as its factorization.

449815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89968.

The product of its digits is 5760, while the sum is 31.

The square root of 449815 is about 670.6824882163. The cubic root of 449815 is about 76.6204405226.

The spelling of 449815 in words is "four hundred forty-nine thousand, eight hundred fifteen".