26805479 has 2 divisors, whose sum is σ = 26805480. Its totient is φ = 26805478.

The previous prime is 26805473. The next prime is 26805497. The reversal of 26805479 is 97450862.

Together with next prime (26805497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26805479 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26805473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13402739 + 13402740.

It is an arithmetic number, because the mean of its divisors is an integer number (13402740).

Almost surely, 2^26805479 is an apocalyptic number.

26805479 is a deficient number, since it is larger than the sum of its proper divisors (1).

26805479 is an equidigital number, since it uses as much as digits as its factorization.

26805479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 26805479 is about 5177.4007957662. The cubic root of 26805479 is about 299.2778147417.

The spelling of 26805479 in words is "twenty-six million, eight hundred five thousand, four hundred seventy-nine".