448391 has 4 divisors (see below), whose sum is σ = 450000. Its totient is φ = 446784.

The previous prime is 448387. The next prime is 448397. The reversal of 448391 is 193844.

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 448391 - 2² = 448387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266 + ... + 983.

It is an arithmetic number, because the mean of its divisors is an integer number (112500).

2⁴⁴⁸³⁹¹ is an apocalyptic number.

448391 is a deficient number, since it is larger than the sum of its proper divisors (1609).

448391 is a wasteful number, since it uses less digits than its factorization.

448391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608.

The product of its digits is 3456, while the sum is 29.

The square root of 448391 is about 669.6200415161. The cubic root of 448391 is about 76.5395014359.

The spelling of 448391 in words is "four hundred forty-eight thousand, three hundred ninety-one".