878345889 has 16 divisors (see below), whose sum is σ = 1234970880. Its totient is φ = 553752720.

The previous prime is 878345887. The next prime is 878345891. The reversal of 878345889 is 988543878.

It is an interprime number because it is at equal distance from previous prime (878345887) and next prime (878345891).

It is not a de Polignac number, because 878345889 - 2¹ = 878345887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (878345887) 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, 19054 + ... + 46040.

It is an arithmetic number, because the mean of its divisors is an integer number (77185680).

Almost surely, 2^878345889 is an apocalyptic number.

It is an amenable number.

878345889 is a deficient number, since it is larger than the sum of its proper divisors (356624991).

878345889 is a wasteful number, since it uses less digits than its factorization.

878345889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27580.

The product of its digits is 15482880, while the sum is 60.

The square root of 878345889 is about 29636.9007995101. The cubic root of 878345889 is about 957.6831751029.

The spelling of 878345889 in words is "eight hundred seventy-eight million, three hundred forty-five thousand, eight hundred eighty-nine".