878923 has 4 divisors (see below), whose sum is σ = 893880. Its totient is φ = 863968.

The previous prime is 878893. The next prime is 878929. The reversal of 878923 is 329878.

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

It is a cyclic number.

It is not a de Polignac number, because 878923 - 2⁹ = 878411 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 (878929) 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, 7390 + ... + 7507.

It is an arithmetic number, because the mean of its divisors is an integer number (223470).

2⁸⁷⁸⁹²³ is an apocalyptic number.

878923 is a deficient number, since it is larger than the sum of its proper divisors (14957).

878923 is a wasteful number, since it uses less digits than its factorization.

878923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14956.

The product of its digits is 24192, while the sum is 37.

The square root of 878923 is about 937.5089332908. The cubic root of 878923 is about 95.7892875518.

The spelling of 878923 in words is "eight hundred seventy-eight thousand, nine hundred twenty-three".