878169 has 16 divisors (see below), whose sum is σ = 1263168. Its totient is φ = 540672.

The previous prime is 878167. The next prime is 878173. The reversal of 878169 is 961878.

It is not a de Polignac number, because 878169 - 2¹ = 878167 is a prime.

It is a super-2 number, since 2×878169² = 1542361585122, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (878167) 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 15 ways as a sum of consecutive naturals, for example, 3289 + ... + 3545.

It is an arithmetic number, because the mean of its divisors is an integer number (78948).

2⁸⁷⁸¹⁶⁹ is an apocalyptic number.

It is an amenable number.

878169 is a deficient number, since it is larger than the sum of its proper divisors (384999).

878169 is a wasteful number, since it uses less digits than its factorization.

878169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344.

The product of its digits is 24192, while the sum is 39.

The square root of 878169 is about 937.1067175087. The cubic root of 878169 is about 95.7618881907.

It can be divided in two parts, 87 and 8169, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 878169 in words is "eight hundred seventy-eight thousand, one hundred sixty-nine".