26850289 has 2 divisors, whose sum is σ = 26850290. Its totient is φ = 26850288.

The previous prime is 26850253. The next prime is 26850311. The reversal of 26850289 is 98205862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17363889 + 9486400 = 4167^2 + 3080^2 .

It is a cyclic number.

It is not a de Polignac number, because 26850289 - 2¹⁵ = 26817521 is a prime.

It is not a weakly prime, because it can be changed into another prime (26851289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13425144 + 13425145.

It is an arithmetic number, because the mean of its divisors is an integer number (13425145).

Almost surely, 2^26850289 is an apocalyptic number.

It is an amenable number.

26850289 is a deficient number, since it is larger than the sum of its proper divisors (1).

26850289 is an equidigital number, since it uses as much as digits as its factorization.

26850289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 26850289 is about 5181.7264497463. The cubic root of 26850289 is about 299.4444868000. Note that the first 4 decimals are identical.

The spelling of 26850289 in words is "twenty-six million, eight hundred fifty thousand, two hundred eighty-nine".