447878 has 4 divisors (see below), whose sum is σ = 671820. Its totient is φ = 223938.

The previous prime is 447877. The next prime is 447883. The reversal of 447878 is 878744.

447878 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111968 + ... + 111971.

It is an arithmetic number, because the mean of its divisors is an integer number (167955).

2⁴⁴⁷⁸⁷⁸ is an apocalyptic number.

447878 is a deficient number, since it is larger than the sum of its proper divisors (223942).

447878 is a wasteful number, since it uses less digits than its factorization.

447878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223941.

The product of its digits is 50176, while the sum is 38.

The square root of 447878 is about 669.2368788404. The cubic root of 447878 is about 76.5103009183.

The spelling of 447878 in words is "four hundred forty-seven thousand, eight hundred seventy-eight".