26309089 has 2 divisors, whose sum is σ = 26309090. Its totient is φ = 26309088.

The previous prime is 26309083. The next prime is 26309093. The reversal of 26309089 is 98090362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16120225 + 10188864 = 4015^2 + 3192^2 .

It is a cyclic number.

It is not a de Polignac number, because 26309089 - 2⁵ = 26309057 is a prime.

It is not a weakly prime, because it can be changed into another prime (26309083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13154544 + 13154545.

It is an arithmetic number, because the mean of its divisors is an integer number (13154545).

Almost surely, 2^26309089 is an apocalyptic number.

It is an amenable number.

26309089 is a deficient number, since it is larger than the sum of its proper divisors (1).

26309089 is an equidigital number, since it uses as much as digits as its factorization.

26309089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 26309089 is about 5129.2386374588. The cubic root of 26309089 is about 297.4189276063.

The spelling of 26309089 in words is "twenty-six million, three hundred nine thousand, eighty-nine".