868878029 has 2 divisors, whose sum is σ = 868878030. Its totient is φ = 868878028.

The previous prime is 868877981. The next prime is 868878089. The reversal of 868878029 is 920878868.

868878029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 519748804 + 349129225 = 22798^2 + 18685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868878029 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868878089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434439014 + 434439015.

It is an arithmetic number, because the mean of its divisors is an integer number (434439015).

Almost surely, 2^868878029 is an apocalyptic number.

It is an amenable number.

868878029 is a deficient number, since it is larger than the sum of its proper divisors (1).

868878029 is an equidigital number, since it uses as much as digits as its factorization.

868878029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3096576, while the sum is 56.

The square root of 868878029 is about 29476.7370819770. The cubic root of 868878029 is about 954.2297194194.

The spelling of 868878029 in words is "eight hundred sixty-eight million, eight hundred seventy-eight thousand, twenty-nine".