447705138 has 16 divisors (see below), whose sum is σ = 895660416. Its totient is φ = 149193360.

The previous prime is 447705133. The next prime is 447705173. The reversal of 447705138 is 831507744.

It is a junction number, because it is equal to n+sod(n) for n = 447705096 and 447705105.

It is not an unprimeable number, because it can be changed into a prime (447705133) 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, 19420 + ... + 35672.

It is an arithmetic number, because the mean of its divisors is an integer number (55978776).

Almost surely, 2^447705138 is an apocalyptic number.

447705138 is an abundant number, since it is smaller than the sum of its proper divisors (447955278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

447705138 is a wasteful number, since it uses less digits than its factorization.

447705138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20849.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 447705138 is about 21159.0438819905. The cubic root of 447705138 is about 765.0045640293.

The spelling of 447705138 in words is "four hundred forty-seven million, seven hundred five thousand, one hundred thirty-eight".