26494397 has 2 divisors, whose sum is σ = 26494398. Its totient is φ = 26494396.

The previous prime is 26494361. The next prime is 26494399. The reversal of 26494397 is 79349462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26429881 + 64516 = 5141^2 + 254^2 .

It is a cyclic number.

It is not a de Polignac number, because 26494397 - 2⁸ = 26494141 is a prime.

Together with 26494399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26494399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13247198 + 13247199.

It is an arithmetic number, because the mean of its divisors is an integer number (13247199).

Almost surely, 2^26494397 is an apocalyptic number.

It is an amenable number.

26494397 is a deficient number, since it is larger than the sum of its proper divisors (1).

26494397 is an equidigital number, since it uses as much as digits as its factorization.

26494397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 44.

The square root of 26494397 is about 5147.2708302556. The cubic root of 26494397 is about 298.1155843387.

The spelling of 26494397 in words is "twenty-six million, four hundred ninety-four thousand, three hundred ninety-seven".