448991 has 8 divisors (see below), whose sum is σ = 471744. Its totient is φ = 426880.

The previous prime is 448969. The next prime is 448993. The reversal of 448991 is 199844.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 448991 - 2⁶ = 448927 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1811 + ... + 2043.

It is an arithmetic number, because the mean of its divisors is an integer number (58968).

2⁴⁴⁸⁹⁹¹ is an apocalyptic number.

448991 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

448991 is a deficient number, since it is larger than the sum of its proper divisors (22753).

448991 is a wasteful number, since it uses less digits than its factorization.

448991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321.

The product of its digits is 10368, while the sum is 35.

The square root of 448991 is about 670.0679070064. The cubic root of 448991 is about 76.5736258439.

The spelling of 448991 in words is "four hundred forty-eight thousand, nine hundred ninety-one".