26398873 has 2 divisors, whose sum is σ = 26398874. Its totient is φ = 26398872.

The previous prime is 26398849. The next prime is 26398907. The reversal of 26398873 is 37889362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14197824 + 12201049 = 3768^2 + 3493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26398873 is a prime.

It is not a weakly prime, because it can be changed into another prime (26398373) 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, 13199436 + 13199437.

It is an arithmetic number, because the mean of its divisors is an integer number (13199437).

Almost surely, 2^26398873 is an apocalyptic number.

It is an amenable number.

26398873 is a deficient number, since it is larger than the sum of its proper divisors (1).

26398873 is an equidigital number, since it uses as much as digits as its factorization.

26398873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 26398873 is about 5137.9833592568. The cubic root of 26398873 is about 297.7568734500.

The spelling of 26398873 in words is "twenty-six million, three hundred ninety-eight thousand, eight hundred seventy-three".