448782789 has 16 divisors (see below), whose sum is σ = 736464512. Its totient is φ = 236720448.

The previous prime is 448782781. The next prime is 448782791. The reversal of 448782789 is 987287844.

It is not a de Polignac number, because 448782789 - 2³ = 448782781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448782781) 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, 821674 + ... + 822219.

It is an arithmetic number, because the mean of its divisors is an integer number (46029032).

Almost surely, 2^448782789 is an apocalyptic number.

It is an amenable number.

448782789 is a deficient number, since it is larger than the sum of its proper divisors (287681723).

448782789 is a wasteful number, since it uses less digits than its factorization.

448782789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643916.

The product of its digits is 7225344, while the sum is 57.

The square root of 448782789 is about 21184.4940699560. The cubic root of 448782789 is about 765.6178749502.

The spelling of 448782789 in words is "four hundred forty-eight million, seven hundred eighty-two thousand, seven hundred eighty-nine".