447729888 has 72 divisors (see below), whose sum is σ = 1191378888. Its totient is φ = 147227392.

The previous prime is 447729871. The next prime is 447729899. The reversal of 447729888 is 888927744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 661006 + ... + 661682.

It is an arithmetic number, because the mean of its divisors is an integer number (16546929).

Almost surely, 2^447729888 is an apocalyptic number.

447729888 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 447729888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (595689444).

447729888 is an abundant number, since it is smaller than the sum of its proper divisors (743649000).

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

447729888 is an equidigital number, since it uses as much as digits as its factorization.

447729888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 765 counting only the distinct ones).

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

The square root of 447729888 is about 21159.6287302022. The cubic root of 447729888 is about 765.0186607435.

The spelling of 447729888 in words is "four hundred forty-seven million, seven hundred twenty-nine thousand, eight hundred eighty-eight".