13960909 has 2 divisors, whose sum is σ = 13960910. Its totient is φ = 13960908.

The previous prime is 13960907. The next prime is 13960937. The reversal of 13960909 is 90906931.

13960909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10099684 + 3861225 = 3178^2 + 1965^2 .

It is an emirp because it is prime and its reverse (90906931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13960909 - 2¹ = 13960907 is a prime.

Together with 13960907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13960901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6980454 + 6980455.

It is an arithmetic number, because the mean of its divisors is an integer number (6980455).

Almost surely, 2^13960909 is an apocalyptic number.

It is an amenable number.

13960909 is a deficient number, since it is larger than the sum of its proper divisors (1).

13960909 is an equidigital number, since it uses as much as digits as its factorization.

13960909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 13960909 is about 3736.4299806098. The cubic root of 13960909 is about 240.7896961868.

The spelling of 13960909 in words is "thirteen million, nine hundred sixty thousand, nine hundred nine".