448199921 has 8 divisors (see below), whose sum is σ = 482961024. Its totient is φ = 413479440.

The previous prime is 448199909. The next prime is 448199929. The reversal of 448199921 is 129991844.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-448199921 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (448199929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15110 + ... + 33536.

It is an arithmetic number, because the mean of its divisors is an integer number (60370128).

Almost surely, 2^448199921 is an apocalyptic number.

It is an amenable number.

448199921 is a deficient number, since it is larger than the sum of its proper divisors (34761103).

448199921 is a wasteful number, since it uses less digits than its factorization.

448199921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20311.

The product of its digits is 186624, while the sum is 47.

The square root of 448199921 is about 21170.7326514696. The cubic root of 448199921 is about 765.2862761570.

The spelling of 448199921 in words is "four hundred forty-eight million, one hundred ninety-nine thousand, nine hundred twenty-one".