878159231 has 2 divisors, whose sum is σ = 878159232. Its totient is φ = 878159230.

The previous prime is 878159207. The next prime is 878159239. The reversal of 878159231 is 132951878.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 878159231 - 2⁶ = 878159167 is a prime.

It is a super-2 number, since 2×878159231² = 1542327269981022722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878159239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439079615 + 439079616.

It is an arithmetic number, because the mean of its divisors is an integer number (439079616).

Almost surely, 2^878159231 is an apocalyptic number.

878159231 is a deficient number, since it is larger than the sum of its proper divisors (1).

878159231 is an equidigital number, since it uses as much as digits as its factorization.

878159231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 44.

The square root of 878159231 is about 29633.7515512296. The cubic root of 878159231 is about 957.6153309530.

The spelling of 878159231 in words is "eight hundred seventy-eight million, one hundred fifty-nine thousand, two hundred thirty-one".