13426709 has 2 divisors, whose sum is σ = 13426710. Its totient is φ = 13426708.

The previous prime is 13426669. The next prime is 13426741. The reversal of 13426709 is 90762431.

It is an a-pointer prime, because the next prime (13426741) can be obtained adding 13426709 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8868484 + 4558225 = 2978^2 + 2135^2 .

It is a cyclic number.

It is not a de Polignac number, because 13426709 - 2¹² = 13422613 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 (13426759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6713354 + 6713355.

It is an arithmetic number, because the mean of its divisors is an integer number (6713355).

Almost surely, 2^13426709 is an apocalyptic number.

It is an amenable number.

13426709 is a deficient number, since it is larger than the sum of its proper divisors (1).

13426709 is an equidigital number, since it uses as much as digits as its factorization.

13426709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 13426709 is about 3664.2473988529. The cubic root of 13426709 is about 237.6784785841.

The spelling of 13426709 in words is "thirteen million, four hundred twenty-six thousand, seven hundred nine".