878787879 has 16 divisors (see below), whose sum is σ = 1193514240. Its totient is φ = 575023680.

The previous prime is 878787853. The next prime is 878787911. The reversal of 878787879 is 978787878.

878787879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 878787879 - 2⁹ = 878787367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878787079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48702 + ... + 64260.

It is an arithmetic number, because the mean of its divisors is an integer number (74594640).

Almost surely, 2^878787879 is an apocalyptic number.

878787879 is a deficient number, since it is larger than the sum of its proper divisors (314726361).

878787879 is a wasteful number, since it uses less digits than its factorization.

878787879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15910.

The product of its digits is 88510464, while the sum is 69.

The square root of 878787879 is about 29644.3566130216. The cubic root of 878787879 is about 957.8437858643.

Subtracting 878787879 from its reverse (978787878), we obtain a palindrome (99999999).

The spelling of 878787879 in words is "eight hundred seventy-eight million, seven hundred eighty-seven thousand, eight hundred seventy-nine".