1290791 has 2 divisors, whose sum is σ = 1290792. Its totient is φ = 1290790.

The previous prime is 1290719. The next prime is 1290811. The reversal of 1290791 is 1970921.

Together with previous prime (1290719) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (1970921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1290791 - 2¹⁸ = 1028647 is a prime.

It is a super-2 number, since 2×1290791² = 3332282811362, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1290491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645395 + 645396.

It is an arithmetic number, because the mean of its divisors is an integer number (645396).

2^1290791 is an apocalyptic number.

1290791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290791 is an equidigital number, since it uses as much as digits as its factorization.

1290791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 1290791 is about 1136.1298341299. The cubic root of 1290791 is about 108.8809687346.

The spelling of 1290791 in words is "one million, two hundred ninety thousand, seven hundred ninety-one".