448430721 has 8 divisors (see below), whose sum is σ = 609189120. Its totient is φ = 293313072.

The previous prime is 448430711. The next prime is 448430783. The reversal of 448430721 is 127034844.

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

It is not a de Polignac number, because 448430721 - 2⁹ = 448430209 is a prime.

It is a super-2 number, since 2×448430721² = 402180223073159682, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (448430711) 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, 1410001 + ... + 1410318.

It is an arithmetic number, because the mean of its divisors is an integer number (76148640).

Almost surely, 2^448430721 is an apocalyptic number.

It is an amenable number.

448430721 is a deficient number, since it is larger than the sum of its proper divisors (160758399).

448430721 is a wasteful number, since it uses less digits than its factorization.

448430721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820375.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 448430721 is about 21176.1828713298. The cubic root of 448430721 is about 765.4176146921.

The spelling of 448430721 in words is "four hundred forty-eight million, four hundred thirty thousand, seven hundred twenty-one".