447788642 has 16 divisors (see below), whose sum is σ = 780649920. Its totient is φ = 188656368.

The previous prime is 447788611. The next prime is 447788647. The reversal of 447788642 is 246887744.

It is not an unprimeable number, because it can be changed into a prime (447788647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270233 + ... + 271884.

It is an arithmetic number, because the mean of its divisors is an integer number (48790620).

Almost surely, 2^447788642 is an apocalyptic number.

447788642 is a deficient number, since it is larger than the sum of its proper divisors (332861278).

447788642 is a wasteful number, since it uses less digits than its factorization.

447788642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542185.

The product of its digits is 2408448, while the sum is 50.

The square root of 447788642 is about 21161.0170360500. The cubic root of 447788642 is about 765.0521228387.

The spelling of 447788642 in words is "four hundred forty-seven million, seven hundred eighty-eight thousand, six hundred forty-two".