878423 has 16 divisors (see below), whose sum is σ = 1108800. Its totient is φ = 691488.

The previous prime is 878419. The next prime is 878443. The reversal of 878423 is 324878.

It is not a de Polignac number, because 878423 - 2² = 878419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 878423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4361 + ... + 4557.

It is an arithmetic number, because the mean of its divisors is an integer number (69300).

2⁸⁷⁸⁴²³ is an apocalyptic number.

878423 is a deficient number, since it is larger than the sum of its proper divisors (230377).

878423 is a wasteful number, since it uses less digits than its factorization.

878423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 217 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 878423 is about 937.2422312295. The cubic root of 878423 is about 95.7711199653.

The spelling of 878423 in words is "eight hundred seventy-eight thousand, four hundred twenty-three".