447699318 has 64 divisors (see below), whose sum is σ = 1088743680. Its totient is φ = 120960000.

The previous prime is 447699283. The next prime is 447699319. The reversal of 447699318 is 813996744.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447699319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10818 + ... + 31818.

It is an arithmetic number, because the mean of its divisors is an integer number (17011620).

Almost surely, 2^447699318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 447699318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (544371840).

447699318 is an abundant number, since it is smaller than the sum of its proper divisors (641044362).

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

447699318 is a wasteful number, since it uses less digits than its factorization.

447699318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21053.

The product of its digits is 1306368, while the sum is 51.

The square root of 447699318 is about 21158.9063516997. The cubic root of 447699318 is about 765.0012490902.

The spelling of 447699318 in words is "four hundred forty-seven million, six hundred ninety-nine thousand, three hundred eighteen".