26116289 has 2 divisors, whose sum is σ = 26116290. Its totient is φ = 26116288.

The previous prime is 26116283. The next prime is 26116297. The reversal of 26116289 is 98261162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14691889 + 11424400 = 3833^2 + 3380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26116289 is a prime.

It is a super-2 number, since 2×26116289² = 1364121102263042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26116283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13058144 + 13058145.

It is an arithmetic number, because the mean of its divisors is an integer number (13058145).

Almost surely, 2^26116289 is an apocalyptic number.

It is an amenable number.

26116289 is a deficient number, since it is larger than the sum of its proper divisors (1).

26116289 is an equidigital number, since it uses as much as digits as its factorization.

26116289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 26116289 is about 5110.4098661458. The cubic root of 26116289 is about 296.6906239683.

The spelling of 26116289 in words is "twenty-six million, one hundred sixteen thousand, two hundred eighty-nine".