260390729 has 2 divisors, whose sum is σ = 260390730. Its totient is φ = 260390728.

The previous prime is 260390723. The next prime is 260390789. The reversal of 260390729 is 927093062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244985104 + 15405625 = 15652^2 + 3925^2 .

It is a cyclic number.

It is not a de Polignac number, because 260390729 - 2¹⁶ = 260325193 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 260390692 and 260390701.

It is not a weakly prime, because it can be changed into another prime (260390723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130195364 + 130195365.

It is an arithmetic number, because the mean of its divisors is an integer number (130195365).

Almost surely, 2^260390729 is an apocalyptic number.

It is an amenable number.

260390729 is a deficient number, since it is larger than the sum of its proper divisors (1).

260390729 is an equidigital number, since it uses as much as digits as its factorization.

260390729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 260390729 is about 16136.6269399773. The cubic root of 260390729 is about 638.5699915935.

The spelling of 260390729 in words is "two hundred sixty million, three hundred ninety thousand, seven hundred twenty-nine".