26226209 has 2 divisors, whose sum is σ = 26226210. Its totient is φ = 26226208.

The previous prime is 26226203. The next prime is 26226227. The reversal of 26226209 is 90262262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23814400 + 2411809 = 4880^2 + 1553^2 .

It is a cyclic number.

It is not a de Polignac number, because 26226209 - 2¹² = 26222113 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26226203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13113104 + 13113105.

It is an arithmetic number, because the mean of its divisors is an integer number (13113105).

Almost surely, 2^26226209 is an apocalyptic number.

It is an amenable number.

26226209 is a deficient number, since it is larger than the sum of its proper divisors (1).

26226209 is an equidigital number, since it uses as much as digits as its factorization.

26226209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 26226209 is about 5121.1530928103. The cubic root of 26226209 is about 297.1062851998.

The spelling of 26226209 in words is "twenty-six million, two hundred twenty-six thousand, two hundred nine".