26889893 has 2 divisors, whose sum is σ = 26889894. Its totient is φ = 26889892.

The previous prime is 26889859. The next prime is 26889911. The reversal of 26889893 is 39898862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23020804 + 3869089 = 4798^2 + 1967^2 .

It is a cyclic number.

It is not a de Polignac number, because 26889893 - 2⁸ = 26889637 is a prime.

It is a Chen prime.

It is a zygodrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26889853) 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, 13444946 + 13444947.

It is an arithmetic number, because the mean of its divisors is an integer number (13444947).

Almost surely, 2^26889893 is an apocalyptic number.

It is an amenable number.

26889893 is a deficient number, since it is larger than the sum of its proper divisors (1).

26889893 is an equidigital number, since it uses as much as digits as its factorization.

26889893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 53.

The square root of 26889893 is about 5185.5465478578. The cubic root of 26889893 is about 299.5916406908.

The spelling of 26889893 in words is "twenty-six million, eight hundred eighty-nine thousand, eight hundred ninety-three".