449890 has 16 divisors (see below), whose sum is σ = 925632. Its totient is φ = 154224.

The previous prime is 449879. The next prime is 449921. The reversal of 449890 is 98944.

449890 = 113² + 114² + ... + 140².

It is an unprimeable number.

449890 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, 3144 + ... + 3283.

It is an arithmetic number, because the mean of its divisors is an integer number (57852).

2⁴⁴⁹⁸⁹⁰ is an apocalyptic number.

449890 is an abundant number, since it is smaller than the sum of its proper divisors (475742).

It is a weird number, because it is abundant, but not a pseudoperfect number.

449890 is a wasteful number, since it uses less digits than its factorization.

449890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6441.

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

The square root of 449890 is about 670.7383990797. The cubic root of 449890 is about 76.6246987277.

It can be divided in two parts, 4 and 49890, that added together give a palindrome (49894).

The spelling of 449890 in words is "four hundred forty-nine thousand, eight hundred ninety".