448008921 has 16 divisors (see below), whose sum is σ = 672121600. Its totient is φ = 294890544.

The previous prime is 448008919. The next prime is 448008941. The reversal of 448008921 is 129800844.

It is not a de Polignac number, because 448008921 - 2¹ = 448008919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (448008901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102886 + ... + 107151.

It is an arithmetic number, because the mean of its divisors is an integer number (42007600).

Almost surely, 2^448008921 is an apocalyptic number.

It is an amenable number.

448008921 is a deficient number, since it is larger than the sum of its proper divisors (224112679).

448008921 is a wasteful number, since it uses less digits than its factorization.

448008921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210125 (or 210119 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 448008921 is about 21166.2212262841. The cubic root of 448008921 is about 765.1775520214.

The spelling of 448008921 in words is "four hundred forty-eight million, eight thousand, nine hundred twenty-one".