863029109 has 2 divisors, whose sum is σ = 863029110. Its totient is φ = 863029108.

The previous prime is 863029099. The next prime is 863029129. The reversal of 863029109 is 901920368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 848090884 + 14938225 = 29122^2 + 3865^2 .

It is a cyclic number.

It is not a de Polignac number, because 863029109 - 2⁴ = 863029093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863029129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431514554 + 431514555.

It is an arithmetic number, because the mean of its divisors is an integer number (431514555).

Almost surely, 2^863029109 is an apocalyptic number.

It is an amenable number.

863029109 is a deficient number, since it is larger than the sum of its proper divisors (1).

863029109 is an equidigital number, since it uses as much as digits as its factorization.

863029109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 863029109 is about 29377.3570799008. The cubic root of 863029109 is about 952.0837397357.

The spelling of 863029109 in words is "eight hundred sixty-three million, twenty-nine thousand, one hundred nine".