447998440 has 32 divisors (see below), whose sum is σ = 1009156680. Its totient is φ = 178993152.

The previous prime is 447998437. The next prime is 447998461. The reversal of 447998440 is 44899744.

It can be written as a sum of positive squares in 4 ways, for example, as 343509156 + 104489284 = 18534^2 + 10222^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31504 + ... + 43456.

Almost surely, 2^447998440 is an apocalyptic number.

447998440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

447998440 is an abundant number, since it is smaller than the sum of its proper divisors (561158240).

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

447998440 is a wasteful number, since it uses less digits than its factorization.

447998440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12901 (or 12897 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 447998440 is about 21165.9736369485. The cubic root of 447998440 is about 765.1715849613.

The spelling of 447998440 in words is "four hundred forty-seven million, nine hundred ninety-eight thousand, four hundred forty".