447238988 has 48 divisors (see below), whose sum is σ = 920930304. Its totient is φ = 186053760.

The previous prime is 447238927. The next prime is 447238991. The reversal of 447238988 is 889832744.

It is a happy number.

It is an unprimeable number.

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, 255131 + ... + 256877.

It is an arithmetic number, because the mean of its divisors is an integer number (19186048).

Almost surely, 2^447238988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 447238988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460465152).

447238988 is an abundant number, since it is smaller than the sum of its proper divisors (473691316).

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

447238988 is a wasteful number, since it uses less digits than its factorization.

447238988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022 (or 2020 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 53.

The square root of 447238988 is about 21148.0256288855. The cubic root of 447238988 is about 764.7389645792.

The spelling of 447238988 in words is "four hundred forty-seven million, two hundred thirty-eight thousand, nine hundred eighty-eight".