26889361 has 2 divisors, whose sum is σ = 26889362. Its totient is φ = 26889360.

The previous prime is 26889353. The next prime is 26889407. The reversal of 26889361 is 16398862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25553025 + 1336336 = 5055^2 + 1156^2 .

It is a cyclic number.

It is not a de Polignac number, because 26889361 - 2³ = 26889353 is a prime.

It is not a weakly prime, because it can be changed into another prime (26889301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13444680 + 13444681.

It is an arithmetic number, because the mean of its divisors is an integer number (13444681).

Almost surely, 2^26889361 is an apocalyptic number.

It is an amenable number.

26889361 is a deficient number, since it is larger than the sum of its proper divisors (1).

26889361 is an equidigital number, since it uses as much as digits as its factorization.

26889361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 26889361 is about 5185.4952511790. The cubic root of 26889361 is about 299.5896649323.

The spelling of 26889361 in words is "twenty-six million, eight hundred eighty-nine thousand, three hundred sixty-one".