260139263 has 2 divisors, whose sum is σ = 260139264. Its totient is φ = 260139262.

The previous prime is 260139227. The next prime is 260139277. The reversal of 260139263 is 362931062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 260139263 - 2¹⁴ = 260122879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260139283) 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, 130069631 + 130069632.

It is an arithmetic number, because the mean of its divisors is an integer number (130069632).

Almost surely, 2^260139263 is an apocalyptic number.

260139263 is a deficient number, since it is larger than the sum of its proper divisors (1).

260139263 is an equidigital number, since it uses as much as digits as its factorization.

260139263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 260139263 is about 16128.8332808049. The cubic root of 260139263 is about 638.3643642509.

The spelling of 260139263 in words is "two hundred sixty million, one hundred thirty-nine thousand, two hundred sixty-three".