26103409 has 2 divisors, whose sum is σ = 26103410. Its totient is φ = 26103408.

The previous prime is 26103373. The next prime is 26103421. The reversal of 26103409 is 90430162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25725184 + 378225 = 5072^2 + 615^2 .

It is a cyclic number.

It is not a de Polignac number, because 26103409 - 2⁹ = 26102897 is a prime.

It is a super-2 number, since 2×26103409² = 1362775922842562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26103479) 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, 13051704 + 13051705.

It is an arithmetic number, because the mean of its divisors is an integer number (13051705).

Almost surely, 2^26103409 is an apocalyptic number.

It is an amenable number.

26103409 is a deficient number, since it is larger than the sum of its proper divisors (1).

26103409 is an equidigital number, since it uses as much as digits as its factorization.

26103409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 26103409 is about 5109.1495378390. The cubic root of 26103409 is about 296.6418421063.

The spelling of 26103409 in words is "twenty-six million, one hundred three thousand, four hundred nine".