260946869 has 2 divisors, whose sum is σ = 260946870. Its totient is φ = 260946868.

The previous prime is 260946859. The next prime is 260946877. The reversal of 260946869 is 968649062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145491844 + 115455025 = 12062^2 + 10745^2 .

It is a cyclic number.

It is not a de Polignac number, because 260946869 - 2⁴ = 260946853 is a prime.

It is a super-2 number, since 2×260946869² = 136186536881806322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260946839) 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, 130473434 + 130473435.

It is an arithmetic number, because the mean of its divisors is an integer number (130473435).

Almost surely, 2^260946869 is an apocalyptic number.

It is an amenable number.

260946869 is a deficient number, since it is larger than the sum of its proper divisors (1).

260946869 is an equidigital number, since it uses as much as digits as its factorization.

260946869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 260946869 is about 16153.8499745417. The cubic root of 260946869 is about 639.0242855248.

The spelling of 260946869 in words is "two hundred sixty million, nine hundred forty-six thousand, eight hundred sixty-nine".