449640 has 48 divisors (see below), whose sum is σ = 1462500. Its totient is φ = 119808.

The previous prime is 449629. The next prime is 449653. The reversal of 449640 is 46944.

It can be written as a sum of positive squares in 2 ways, for example, as 443556 + 6084 = 666^2 + 78^2 .

It is a super-2 number, since 2×449640² = 404352259200, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 449640.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 265 + ... + 984.

2⁴⁴⁹⁶⁴⁰ is an apocalyptic number.

449640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

449640 is an abundant number, since it is smaller than the sum of its proper divisors (1012860).

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

449640 is a wasteful number, since it uses less digits than its factorization.

449640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266 (or 1259 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 449640 is about 670.5520114055. The cubic root of 449640 is about 76.6105028694.

It can be divided in two parts, 449 and 640, that added together give a square (1089 = 33²).

The spelling of 449640 in words is "four hundred forty-nine thousand, six hundred forty".