13709329 has 2 divisors, whose sum is σ = 13709330. Its totient is φ = 13709328.

The previous prime is 13709321. The next prime is 13709387. The reversal of 13709329 is 92390731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8294400 + 5414929 = 2880^2 + 2327^2 .

It is an emirp because it is prime and its reverse (92390731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13709329 - 2³ = 13709321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13709294 and 13709303.

It is not a weakly prime, because it can be changed into another prime (13709321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6854664 + 6854665.

It is an arithmetic number, because the mean of its divisors is an integer number (6854665).

Almost surely, 2^13709329 is an apocalyptic number.

It is an amenable number.

13709329 is a deficient number, since it is larger than the sum of its proper divisors (1).

13709329 is an equidigital number, since it uses as much as digits as its factorization.

13709329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 13709329 is about 3702.6111056928. The cubic root of 13709329 is about 239.3345512896.

The spelling of 13709329 in words is "thirteen million, seven hundred nine thousand, three hundred twenty-nine".