878863289 has 4 divisors (see below), whose sum is σ = 878939520. Its totient is φ = 878787060.

The previous prime is 878863277. The next prime is 878863301. The reversal of 878863289 is 982368878.

878863289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (878863277) and next prime (878863301).

It is a cyclic number.

It is not a de Polignac number, because 878863289 - 2⁴ = 878863273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (878863789) 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, 16877 + ... + 45194.

It is an arithmetic number, because the mean of its divisors is an integer number (219734880).

Almost surely, 2^878863289 is an apocalyptic number.

It is an amenable number.

878863289 is a deficient number, since it is larger than the sum of its proper divisors (76231).

878863289 is a wasteful number, since it uses less digits than its factorization.

878863289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76230.

The product of its digits is 9289728, while the sum is 59.

The square root of 878863289 is about 29645.6284973013. The cubic root of 878863289 is about 957.8711830462.

The spelling of 878863289 in words is "eight hundred seventy-eight million, eight hundred sixty-three thousand, two hundred eighty-nine".