13429909 has 2 divisors, whose sum is σ = 13429910. Its totient is φ = 13429908.

The previous prime is 13429849. The next prime is 13429931. The reversal of 13429909 is 90992431.

13429909 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13176900 + 253009 = 3630^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 13429909 - 2¹¹ = 13427861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13429109) 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, 6714954 + 6714955.

It is an arithmetic number, because the mean of its divisors is an integer number (6714955).

Almost surely, 2^13429909 is an apocalyptic number.

It is an amenable number.

13429909 is a deficient number, since it is larger than the sum of its proper divisors (1).

13429909 is an equidigital number, since it uses as much as digits as its factorization.

13429909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 13429909 is about 3664.6840245784. The cubic root of 13429909 is about 237.6973591283.

The spelling of 13429909 in words is "thirteen million, four hundred twenty-nine thousand, nine hundred nine".