878347 has 4 divisors (see below), whose sum is σ = 916560. Its totient is φ = 840136.

The previous prime is 878309. The next prime is 878359. The reversal of 878347 is 743878.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 743878 = 2 ⋅371939.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-878347 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (878377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19072 + ... + 19117.

It is an arithmetic number, because the mean of its divisors is an integer number (229140).

2⁸⁷⁸³⁴⁷ is an apocalyptic number.

878347 is a deficient number, since it is larger than the sum of its proper divisors (38213).

878347 is a wasteful number, since it uses less digits than its factorization.

878347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38212.

The product of its digits is 37632, while the sum is 37.

The square root of 878347 is about 937.2016858713. The cubic root of 878347 is about 95.7683578887.

It can be divided in two parts, 878 and 347, that added together give a triangular number (1225 = T₄₉).

The spelling of 878347 in words is "eight hundred seventy-eight thousand, three hundred forty-seven".