878009 has 8 divisors (see below), whose sum is σ = 1008480. Its totient is φ = 756000.

The previous prime is 877997. The next prime is 878011. The reversal of 878009 is 900878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 878009 - 2¹² = 873913 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1892 + ... + 2309.

It is an arithmetic number, because the mean of its divisors is an integer number (126060).

2⁸⁷⁸⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

878009 is a deficient number, since it is larger than the sum of its proper divisors (130471).

878009 is a wasteful number, since it uses less digits than its factorization.

878009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4231.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 878009 is about 937.0213444741. The cubic root of 878009 is about 95.7560719857.

The spelling of 878009 in words is "eight hundred seventy-eight thousand, nine".