878447 has 8 divisors (see below), whose sum is σ = 929280. Its totient is φ = 829080.

The previous prime is 878443. The next prime is 878453. The reversal of 878447 is 744878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 878447 - 2² = 878443 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 878447.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 878447.

It is not an unprimeable number, because it can be changed into a prime (878443) 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, 1004 + ... + 1662.

It is an arithmetic number, because the mean of its divisors is an integer number (116160).

2⁸⁷⁸⁴⁴⁷ is an apocalyptic number.

878447 is a deficient number, since it is larger than the sum of its proper divisors (50833).

878447 is a wasteful number, since it uses less digits than its factorization.

878447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733.

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

The square root of 878447 is about 937.2550346624. The cubic root of 878447 is about 95.7719921670.

The spelling of 878447 in words is "eight hundred seventy-eight thousand, four hundred forty-seven".