447038640 has 60 divisors (see below), whose sum is σ = 1501307184. Its totient is φ = 119210112.

The previous prime is 447038549. The next prime is 447038651. The reversal of 447038640 is 46830744.

447038640 is a `hidden beast` number, since 4 + 4 + 7 + 0 + 3 + 8 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 447038595 and 447038604.

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, 309724 + ... + 311163.

Almost surely, 2^447038640 is an apocalyptic number.

447038640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

447038640 is an abundant number, since it is smaller than the sum of its proper divisors (1054268544).

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

447038640 is a wasteful number, since it uses less digits than its factorization.

447038640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620906 (or 620897 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 447038640 is about 21143.2882967622. The cubic root of 447038640 is about 764.6247550924.

The spelling of 447038640 in words is "four hundred forty-seven million, thirty-eight thousand, six hundred forty".