878199 has 32 divisors (see below), whose sum is σ = 1474560. Its totient is φ = 453600.

The previous prime is 878197. The next prime is 878201. The reversal of 878199 is 991878.

It is an interprime number because it is at equal distance from previous prime (878197) and next prime (878201).

It is not a de Polignac number, because 878199 - 2¹ = 878197 is a prime.

878199 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 878199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878191) 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 31 ways as a sum of consecutive naturals, for example, 12334 + ... + 12404.

It is an arithmetic number, because the mean of its divisors is an integer number (46080).

2⁸⁷⁸¹⁹⁹ is an apocalyptic number.

878199 is a deficient number, since it is larger than the sum of its proper divisors (596361).

878199 is a wasteful number, since it uses less digits than its factorization.

878199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131.

The product of its digits is 36288, while the sum is 42.

The square root of 878199 is about 937.1227240869. The cubic root of 878199 is about 95.7629786505.

The spelling of 878199 in words is "eight hundred seventy-eight thousand, one hundred ninety-nine".