828879 has 4 divisors (see below), whose sum is σ = 1105176. Its totient is φ = 552584.

The previous prime is 828871. The next prime is 828881. The reversal of 828879 is 978828.

It is a happy number.

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 828879 - 2³ = 828871 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 828879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138144 + ... + 138149.

It is an arithmetic number, because the mean of its divisors is an integer number (276294).

2⁸²⁸⁸⁷⁹ is an apocalyptic number.

828879 is a deficient number, since it is larger than the sum of its proper divisors (276297).

828879 is a wasteful number, since it uses less digits than its factorization.

828879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276296.

The product of its digits is 64512, while the sum is 42.

The square root of 828879 is about 910.4279213645. The cubic root of 828879 is about 93.9356357329.

The spelling of 828879 in words is "eight hundred twenty-eight thousand, eight hundred seventy-nine".