864112729 has 2 divisors, whose sum is σ = 864112730. Its totient is φ = 864112728.

The previous prime is 864112709. The next prime is 864112747. The reversal of 864112729 is 927211468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481714704 + 382398025 = 21948^2 + 19555^2 .

It is a cyclic number.

It is not a de Polignac number, because 864112729 - 2¹⁹ = 863588441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 864112691 and 864112700.

It is not a weakly prime, because it can be changed into another prime (864112709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432056364 + 432056365.

It is an arithmetic number, because the mean of its divisors is an integer number (432056365).

Almost surely, 2^864112729 is an apocalyptic number.

It is an amenable number.

864112729 is a deficient number, since it is larger than the sum of its proper divisors (1).

864112729 is an equidigital number, since it uses as much as digits as its factorization.

864112729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 864112729 is about 29395.7944100853. The cubic root of 864112729 is about 952.4820520955.

The spelling of 864112729 in words is "eight hundred sixty-four million, one hundred twelve thousand, seven hundred twenty-nine".