878833489 has 2 divisors, whose sum is σ = 878833490. Its totient is φ = 878833488.

The previous prime is 878833481. The next prime is 878833511. The reversal of 878833489 is 984338878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 853633089 + 25200400 = 29217^2 + 5020^2 .

It is a cyclic number.

It is not a de Polignac number, because 878833489 - 2³ = 878833481 is a prime.

It is not a weakly prime, because it can be changed into another prime (878833481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439416744 + 439416745.

It is an arithmetic number, because the mean of its divisors is an integer number (439416745).

Almost surely, 2^878833489 is an apocalyptic number.

It is an amenable number.

878833489 is a deficient number, since it is larger than the sum of its proper divisors (1).

878833489 is an equidigital number, since it uses as much as digits as its factorization.

878833489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9289728, while the sum is 58.

The square root of 878833489 is about 29645.1258894274. The cubic root of 878833489 is about 957.8603566054.

The spelling of 878833489 in words is "eight hundred seventy-eight million, eight hundred thirty-three thousand, four hundred eighty-nine".