448992309 has 16 divisors (see below), whose sum is σ = 614024064. Its totient is φ = 291720000.

The previous prime is 448992307. The next prime is 448992329. The reversal of 448992309 is 903299844.

It is not a de Polignac number, because 448992309 - 2¹ = 448992307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448992307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14659 + ... + 33359.

It is an arithmetic number, because the mean of its divisors is an integer number (38376504).

Almost surely, 2^448992309 is an apocalyptic number.

It is an amenable number.

448992309 is a deficient number, since it is larger than the sum of its proper divisors (165031755).

448992309 is a wasteful number, since it uses less digits than its factorization.

448992309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18908.

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 448992309 is about 21189.4386192745. The cubic root of 448992309 is about 765.7370025876.

The spelling of 448992309 in words is "four hundred forty-eight million, nine hundred ninety-two thousand, three hundred nine".