26879789 has 2 divisors, whose sum is σ = 26879790. Its totient is φ = 26879788.

The previous prime is 26879779. The next prime is 26879849. The reversal of 26879789 is 98797862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21436900 + 5442889 = 4630^2 + 2333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26879789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26879779) 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, 13439894 + 13439895.

It is an arithmetic number, because the mean of its divisors is an integer number (13439895).

Almost surely, 2^26879789 is an apocalyptic number.

It is an amenable number.

26879789 is a deficient number, since it is larger than the sum of its proper divisors (1).

26879789 is an equidigital number, since it uses as much as digits as its factorization.

26879789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 56.

The square root of 26879789 is about 5184.5722099321. The cubic root of 26879789 is about 299.5541116811.

The spelling of 26879789 in words is "twenty-six million, eight hundred seventy-nine thousand, seven hundred eighty-nine".