448639 has 4 divisors (see below), whose sum is σ = 451800. Its totient is φ = 445480.

The previous prime is 448633. The next prime is 448667. The reversal of 448639 is 936844.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 448639 - 2³ = 448631 is a prime.

It is a Duffinian number.

448639 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448631) 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 3 ways as a sum of consecutive naturals, for example, 1357 + ... + 1654.

It is an arithmetic number, because the mean of its divisors is an integer number (112950).

2⁴⁴⁸⁶³⁹ is an apocalyptic number.

448639 is a deficient number, since it is larger than the sum of its proper divisors (3161).

448639 is a wasteful number, since it uses less digits than its factorization.

448639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160.

The product of its digits is 20736, while the sum is 34.

The square root of 448639 is about 669.8051955606. The cubic root of 448639 is about 76.5536098799.

The spelling of 448639 in words is "four hundred forty-eight thousand, six hundred thirty-nine".