26380789 has 2 divisors, whose sum is σ = 26380790. Its totient is φ = 26380788.

The previous prime is 26380777. The next prime is 26380859. The reversal of 26380789 is 98708362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19448100 + 6932689 = 4410^2 + 2633^2 .

It is a cyclic number.

It is not a de Polignac number, because 26380789 - 2¹¹ = 26378741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26680789) 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, 13190394 + 13190395.

It is an arithmetic number, because the mean of its divisors is an integer number (13190395).

Almost surely, 2^26380789 is an apocalyptic number.

It is an amenable number.

26380789 is a deficient number, since it is larger than the sum of its proper divisors (1).

26380789 is an equidigital number, since it uses as much as digits as its factorization.

26380789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 26380789 is about 5136.2232233422. The cubic root of 26380789 is about 297.6888671970.

The spelling of 26380789 in words is "twenty-six million, three hundred eighty thousand, seven hundred eighty-nine".