26413109 has 2 divisors, whose sum is σ = 26413110. Its totient is φ = 26413108.

The previous prime is 26413099. The next prime is 26413111. The reversal of 26413109 is 90131462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25472209 + 940900 = 5047^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 26413109 - 2⁸ = 26412853 is a prime.

Together with 26413111, 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 (26413129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13206554 + 13206555.

It is an arithmetic number, because the mean of its divisors is an integer number (13206555).

Almost surely, 2^26413109 is an apocalyptic number.

It is an amenable number.

26413109 is a deficient number, since it is larger than the sum of its proper divisors (1).

26413109 is an equidigital number, since it uses as much as digits as its factorization.

26413109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 26413109 is about 5139.3685409786. The cubic root of 26413109 is about 297.8103871628.

The spelling of 26413109 in words is "twenty-six million, four hundred thirteen thousand, one hundred nine".