26404769 has 2 divisors, whose sum is σ = 26404770. Its totient is φ = 26404768.

The previous prime is 26404747. The next prime is 26404789. The reversal of 26404769 is 96740462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23892544 + 2512225 = 4888^2 + 1585^2 .

It is a cyclic number.

It is not a de Polignac number, because 26404769 - 2¹⁶ = 26339233 is a prime.

It is a super-2 number, since 2×26404769² = 1394423651886722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26404739) 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, 13202384 + 13202385.

It is an arithmetic number, because the mean of its divisors is an integer number (13202385).

Almost surely, 2^26404769 is an apocalyptic number.

It is an amenable number.

26404769 is a deficient number, since it is larger than the sum of its proper divisors (1).

26404769 is an equidigital number, since it uses as much as digits as its factorization.

26404769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 26404769 is about 5138.5570931926. The cubic root of 26404769 is about 297.7790390913.

The spelling of 26404769 in words is "twenty-six million, four hundred four thousand, seven hundred sixty-nine".