878136889 has 12 divisors (see below), whose sum is σ = 1075270800. Its totient is φ = 713072808.

The previous prime is 878136881. The next prime is 878136937. The reversal of 878136889 is 988631878.

It is not a de Polignac number, because 878136889 - 2³ = 878136881 is a prime.

It is a super-3 number, since 3×878136889³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (878136881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470679 + ... + 472540.

It is an arithmetic number, because the mean of its divisors is an integer number (89605900).

Almost surely, 2^878136889 is an apocalyptic number.

It is an amenable number.

878136889 is a deficient number, since it is larger than the sum of its proper divisors (197133911).

878136889 is a wasteful number, since it uses less digits than its factorization.

878136889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943252 (or 943245 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 58.

The square root of 878136889 is about 29633.3745800238. The cubic root of 878136889 is about 957.6072097140.

The spelling of 878136889 in words is "eight hundred seventy-eight million, one hundred thirty-six thousand, eight hundred eighty-nine".