26398849 has 2 divisors, whose sum is σ = 26398850. Its totient is φ = 26398848.

The previous prime is 26398829. The next prime is 26398873. The reversal of 26398849 is 94889362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20638849 + 5760000 = 4543^2 + 2400^2 .

It is a cyclic number.

It is not a de Polignac number, because 26398849 - 2²³ = 18010241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26398829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13199424 + 13199425.

It is an arithmetic number, because the mean of its divisors is an integer number (13199425).

Almost surely, 2^26398849 is an apocalyptic number.

It is an amenable number.

26398849 is a deficient number, since it is larger than the sum of its proper divisors (1).

26398849 is an equidigital number, since it uses as much as digits as its factorization.

26398849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 49.

The square root of 26398849 is about 5137.9810237096. The cubic root of 26398849 is about 297.7567832168.

The spelling of 26398849 in words is "twenty-six million, three hundred ninety-eight thousand, eight hundred forty-nine".