447922478 has 4 divisors (see below), whose sum is σ = 671883720. Its totient is φ = 223961238.

The previous prime is 447922471. The next prime is 447922507. The reversal of 447922478 is 874229744.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447922471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111980618 + ... + 111980621.

It is an arithmetic number, because the mean of its divisors is an integer number (167970930).

Almost surely, 2^447922478 is an apocalyptic number.

447922478 is a deficient number, since it is larger than the sum of its proper divisors (223961242).

447922478 is a wasteful number, since it uses less digits than its factorization.

447922478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223961241.

The product of its digits is 903168, while the sum is 47.

The square root of 447922478 is about 21164.1791241711. The cubic root of 447922478 is about 765.1283353692.

The spelling of 447922478 in words is "four hundred forty-seven million, nine hundred twenty-two thousand, four hundred seventy-eight".