26797009 has 2 divisors, whose sum is σ = 26797010. Its totient is φ = 26797008.

The previous prime is 26797007. The next prime is 26797019. The reversal of 26797009 is 90079762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26780625 + 16384 = 5175^2 + 128^2 .

It is a cyclic number.

It is not a de Polignac number, because 26797009 - 2¹ = 26797007 is a prime.

Together with 26797007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26797007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13398504 + 13398505.

It is an arithmetic number, because the mean of its divisors is an integer number (13398505).

Almost surely, 2^26797009 is an apocalyptic number.

It is an amenable number.

26797009 is a deficient number, since it is larger than the sum of its proper divisors (1).

26797009 is an equidigital number, since it uses as much as digits as its factorization.

26797009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 26797009 is about 5176.5827531297. The cubic root of 26797009 is about 299.2462894687.

The spelling of 26797009 in words is "twenty-six million, seven hundred ninety-seven thousand, nine".