449940 has 24 divisors (see below), whose sum is σ = 1260000. Its totient is φ = 119968.

The previous prime is 449929. The next prime is 449941. The reversal of 449940 is 49944.

It is a super-4 number, since 4×449940⁴ (a number of 24 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 449898 and 449907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449941) by changing a digit.

449940 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3690 + ... + 3809.

It is an arithmetic number, because the mean of its divisors is an integer number (52500).

2⁴⁴⁹⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

449940 is an abundant number, since it is smaller than the sum of its proper divisors (810060).

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

449940 is a wasteful number, since it uses less digits than its factorization.

449940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7511 (or 7509 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 449940 is about 670.7756703996. The cubic root of 449940 is about 76.6275372683.

The spelling of 449940 in words is "four hundred forty-nine thousand, nine hundred forty".