26198269 has 2 divisors, whose sum is σ = 26198270. Its totient is φ = 26198268.

The previous prime is 26198267. The next prime is 26198279. The reversal of 26198269 is 96289162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21511044 + 4687225 = 4638^2 + 2165^2 .

It is a cyclic number.

It is not a de Polignac number, because 26198269 - 2¹ = 26198267 is a prime.

It is a super-2 number, since 2×26198269² = 1372698597192722, which contains 22 as substring.

Together with 26198267, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26198267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13099134 + 13099135.

It is an arithmetic number, because the mean of its divisors is an integer number (13099135).

Almost surely, 2^26198269 is an apocalyptic number.

It is an amenable number.

26198269 is a deficient number, since it is larger than the sum of its proper divisors (1).

26198269 is an equidigital number, since it uses as much as digits as its factorization.

26198269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 26198269 is about 5118.4244646180. The cubic root of 26198269 is about 297.0007406633. Note that the first 3 decimals are identical.

The spelling of 26198269 in words is "twenty-six million, one hundred ninety-eight thousand, two hundred sixty-nine".