865429801 has 2 divisors, whose sum is σ = 865429802. Its totient is φ = 865429800.

The previous prime is 865429781. The next prime is 865429811. The reversal of 865429801 is 108924568.

It is a happy number.

865429801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501536025 + 363893776 = 22395^2 + 19076^2 .

It is a cyclic number.

It is not a de Polignac number, because 865429801 - 2⁵ = 865429769 is a prime.

It is not a weakly prime, because it can be changed into another prime (865429811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432714900 + 432714901.

It is an arithmetic number, because the mean of its divisors is an integer number (432714901).

Almost surely, 2^865429801 is an apocalyptic number.

It is an amenable number.

865429801 is a deficient number, since it is larger than the sum of its proper divisors (1).

865429801 is an equidigital number, since it uses as much as digits as its factorization.

865429801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 865429801 is about 29418.1882684845. The cubic root of 865429801 is about 952.9657276544.

The spelling of 865429801 in words is "eight hundred sixty-five million, four hundred twenty-nine thousand, eight hundred one".