260390791 has 2 divisors, whose sum is σ = 260390792. Its totient is φ = 260390790.

The previous prime is 260390789. The next prime is 260390807. The reversal of 260390791 is 197093062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260390791 - 2¹ = 260390789 is a prime.

Together with 260390789, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 260390791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260390701) 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, 130195395 + 130195396.

It is an arithmetic number, because the mean of its divisors is an integer number (130195396).

Almost surely, 2^260390791 is an apocalyptic number.

260390791 is a deficient number, since it is larger than the sum of its proper divisors (1).

260390791 is an equidigital number, since it uses as much as digits as its factorization.

260390791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 260390791 is about 16136.6288610726. The cubic root of 260390791 is about 638.5700422755.

The spelling of 260390791 in words is "two hundred sixty million, three hundred ninety thousand, seven hundred ninety-one".