448643129 has 16 divisors (see below), whose sum is σ = 527192064. Its totient is φ = 377533200.

The previous prime is 448643099. The next prime is 448643179. The reversal of 448643129 is 921346844.

It is a de Polignac number, because none of the positive numbers 2^k-448643129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (448643179) 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, 20759 + ... + 36444.

It is an arithmetic number, because the mean of its divisors is an integer number (32949504).

Almost surely, 2^448643129 is an apocalyptic number.

It is an amenable number.

448643129 is a deficient number, since it is larger than the sum of its proper divisors (78548935).

448643129 is a wasteful number, since it uses less digits than its factorization.

448643129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57268.

The product of its digits is 165888, while the sum is 41.

The square root of 448643129 is about 21181.1975346060. The cubic root of 448643129 is about 765.5384473008.

The spelling of 448643129 in words is "four hundred forty-eight million, six hundred forty-three thousand, one hundred twenty-nine".