878268929 has 2 divisors, whose sum is σ = 878268930. Its totient is φ = 878268928.

The previous prime is 878268893. The next prime is 878268959. The reversal of 878268929 is 929862878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 677196529 + 201072400 = 26023^2 + 14180^2 .

It is a cyclic number.

It is not a de Polignac number, because 878268929 - 2¹² = 878264833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (878268959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439134464 + 439134465.

It is an arithmetic number, because the mean of its divisors is an integer number (439134465).

Almost surely, 2^878268929 is an apocalyptic number.

It is an amenable number.

878268929 is a deficient number, since it is larger than the sum of its proper divisors (1).

878268929 is an equidigital number, since it uses as much as digits as its factorization.

878268929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 59.

The square root of 878268929 is about 29635.6023896934. The cubic root of 878268929 is about 957.6552037950.

The spelling of 878268929 in words is "eight hundred seventy-eight million, two hundred sixty-eight thousand, nine hundred twenty-nine".