878459 has 4 divisors (see below), whose sum is σ = 885504. Its totient is φ = 871416.

The previous prime is 878453. The next prime is 878467. The reversal of 878459 is 954878.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 954878 = 2 ⋅477439.

It is a cyclic number.

It is not a de Polignac number, because 878459 - 2⁴ = 878443 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 878459.

It is not an unprimeable number, because it can be changed into a prime (878453) 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, 3332 + ... + 3585.

It is an arithmetic number, because the mean of its divisors is an integer number (221376).

2⁸⁷⁸⁴⁵⁹ is an apocalyptic number.

878459 is a deficient number, since it is larger than the sum of its proper divisors (7045).

878459 is a wasteful number, since it uses less digits than its factorization.

878459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7044.

The product of its digits is 80640, while the sum is 41.

The square root of 878459 is about 937.2614363133. The cubic root of 878459 is about 95.7724282619.

The spelling of 878459 in words is "eight hundred seventy-eight thousand, four hundred fifty-nine".