448405 has 4 divisors (see below), whose sum is σ = 538092. Its totient is φ = 358720.

The previous prime is 448397. The next prime is 448421. The reversal of 448405 is 504844.

448405 = 473² + 474².

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

It can be written as a sum of positive squares in 2 ways, for example, as 223729 + 224676 = 473^2 + 474^2 .

It is not a de Polignac number, because 448405 - 2³ = 448397 is a prime.

It is an Ulam number.

It is a Duffinian number.

448405 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 448405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44836 + ... + 44845.

It is an arithmetic number, because the mean of its divisors is an integer number (134523).

2⁴⁴⁸⁴⁰⁵ is an apocalyptic number.

448405 is the 474-th centered square number.

It is an amenable number.

448405 is a deficient number, since it is larger than the sum of its proper divisors (89687).

448405 is an equidigital number, since it uses as much as digits as its factorization.

448405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89686.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 448405 is about 669.6304951240. The cubic root of 448405 is about 76.5402980189.

The spelling of 448405 in words is "four hundred forty-eight thousand, four hundred five".