448270991 has 4 divisors (see below), whose sum is σ = 512309712. Its totient is φ = 384232272.

The previous prime is 448270981. The next prime is 448270993. The reversal of 448270991 is 199072844.

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 448270991 - 2¹⁰ = 448269967 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 (448270993) 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, 32019350 + ... + 32019363.

It is an arithmetic number, because the mean of its divisors is an integer number (128077428).

Almost surely, 2^448270991 is an apocalyptic number.

448270991 is a deficient number, since it is larger than the sum of its proper divisors (64038721).

448270991 is an equidigital number, since it uses as much as digits as its factorization.

448270991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64038720.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 448270991 is about 21172.4110814050. The cubic root of 448270991 is about 765.3267238967.

The spelling of 448270991 in words is "four hundred forty-eight million, two hundred seventy thousand, nine hundred ninety-one".