447390740 has 24 divisors (see below), whose sum is σ = 943187112. Its totient is φ = 178257920.

The previous prime is 447390737. The next prime is 447390761. The reversal of 447390740 is 47093744.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 329277316 + 118113424 = 18146^2 + 10868^2 .

It is a junction number, because it is equal to n+sod(n) for n = 447390694 and 447390703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38381 + ... + 48660.

It is an arithmetic number, because the mean of its divisors is an integer number (39299463).

Almost surely, 2^447390740 is an apocalyptic number.

It is an amenable number.

447390740 is an abundant number, since it is smaller than the sum of its proper divisors (495796372).

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

447390740 is a wasteful number, since it uses less digits than its factorization.

447390740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87307 (or 87305 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 447390740 is about 21151.6131772496. The cubic root of 447390740 is about 764.8254489476.

The spelling of 447390740 in words is "four hundred forty-seven million, three hundred ninety thousand, seven hundred forty".