868122729 has 24 divisors (see below), whose sum is σ = 1299876864. Its totient is φ = 557712000.

The previous prime is 868122727. The next prime is 868122733. The reversal of 868122729 is 927221868.

868122729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 868122729 - 2¹ = 868122727 is a prime.

It is not an unprimeable number, because it can be changed into a prime (868122727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60784 + ... + 73694.

It is an arithmetic number, because the mean of its divisors is an integer number (54161536).

Almost surely, 2^868122729 is an apocalyptic number.

It is an amenable number.

868122729 is a deficient number, since it is larger than the sum of its proper divisors (431754135).

868122729 is a wasteful number, since it uses less digits than its factorization.

868122729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13189 (or 13186 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 868122729 is about 29463.9224985405. The cubic root of 868122729 is about 953.9531410340.

The spelling of 868122729 in words is "eight hundred sixty-eight million, one hundred twenty-two thousand, seven hundred twenty-nine".