449540 has 72 divisors (see below), whose sum is σ = 1229760. Its totient is φ = 134784.

The previous prime is 449473. The next prime is 449543. The reversal of 449540 is 45944.

449540 = T₃₆ + T₃₇ + ... + T₁₃₉.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (449543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23651 + ... + 23669.

It is an arithmetic number, because the mean of its divisors is an integer number (17080).

2⁴⁴⁹⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614880).

449540 is an abundant number, since it is smaller than the sum of its proper divisors (780220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449540 is a wasteful number, since it uses less digits than its factorization.

449540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 449540 is about 670.4774418278. The cubic root of 449540 is about 76.6048230528.

It can be divided in two parts, 449 and 540, that added together give a palindrome (989).

The spelling of 449540 in words is "four hundred forty-nine thousand, five hundred forty".