449980 has 24 divisors (see below), whose sum is σ = 957600. Its totient is φ = 177600.

The previous prime is 449971. The next prime is 449987. The reversal of 449980 is 89944.

It is a super-3 number, since 3×449980³ = 273338551619976000, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2905 + ... + 3055.

It is an arithmetic number, because the mean of its divisors is an integer number (39900).

2⁴⁴⁹⁹⁸⁰ is an apocalyptic number.

It is an amenable number.

449980 is an abundant number, since it is smaller than the sum of its proper divisors (507620).

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

449980 is a wasteful number, since it uses less digits than its factorization.

449980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 449980 is about 670.8054859644. The cubic root of 449980 is about 76.6298079493.

The spelling of 449980 in words is "four hundred forty-nine thousand, nine hundred eighty".