260830391 has 2 divisors, whose sum is σ = 260830392. Its totient is φ = 260830390.

The previous prime is 260830291. The next prime is 260830403. The reversal of 260830391 is 193038062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 260830391 - 2²² = 256636087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260830291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130415195 + 130415196.

It is an arithmetic number, because the mean of its divisors is an integer number (130415196).

Almost surely, 2^260830391 is an apocalyptic number.

260830391 is a deficient number, since it is larger than the sum of its proper divisors (1).

260830391 is an equidigital number, since it uses as much as digits as its factorization.

260830391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 260830391 is about 16150.2443015578. The cubic root of 260830391 is about 638.9291916481.

The spelling of 260830391 in words is "two hundred sixty million, eight hundred thirty thousand, three hundred ninety-one".