260443109 has 2 divisors, whose sum is σ = 260443110. Its totient is φ = 260443108.

The previous prime is 260443093. The next prime is 260443129. The reversal of 260443109 is 901344062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258888100 + 1555009 = 16090^2 + 1247^2 .

It is a cyclic number.

It is not a de Polignac number, because 260443109 - 2⁴ = 260443093 is a prime.

It is a super-2 number, since 2×260443109² = 135661226051171762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260443129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130221554 + 130221555.

It is an arithmetic number, because the mean of its divisors is an integer number (130221555).

Almost surely, 2^260443109 is an apocalyptic number.

It is an amenable number.

260443109 is a deficient number, since it is larger than the sum of its proper divisors (1).

260443109 is an equidigital number, since it uses as much as digits as its factorization.

260443109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 260443109 is about 16138.2498741344. The cubic root of 260443109 is about 638.6128068065.

The spelling of 260443109 in words is "two hundred sixty million, four hundred forty-three thousand, one hundred nine".