879789 has 4 divisors (see below), whose sum is σ = 1173056. Its totient is φ = 586524.

The previous prime is 879743. The next prime is 879797. The reversal of 879789 is 987978.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 879789 - 2⁷ = 879661 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879709) 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, 146629 + ... + 146634.

It is an arithmetic number, because the mean of its divisors is an integer number (293264).

2⁸⁷⁹⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

879789 is a deficient number, since it is larger than the sum of its proper divisors (293267).

879789 is a wasteful number, since it uses less digits than its factorization.

879789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293266.

The product of its digits is 254016, while the sum is 48.

The square root of 879789 is about 937.9706818446. The cubic root of 879789 is about 95.8207375170.

It can be divided in two parts, 8 and 79789, that added together give a palindrome (79797).

The spelling of 879789 in words is "eight hundred seventy-nine thousand, seven hundred eighty-nine".