13679539 has 2 divisors, whose sum is σ = 13679540. Its totient is φ = 13679538.

The previous prime is 13679537. The next prime is 13679557. The reversal of 13679539 is 93597631.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13679539 - 2¹ = 13679537 is a prime.

Together with 13679537, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13679495 and 13679504.

It is not a weakly prime, because it can be changed into another prime (13679531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6839769 + 6839770.

It is an arithmetic number, because the mean of its divisors is an integer number (6839770).

Almost surely, 2^13679539 is an apocalyptic number.

13679539 is a deficient number, since it is larger than the sum of its proper divisors (1).

13679539 is an equidigital number, since it uses as much as digits as its factorization.

13679539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 43.

The square root of 13679539 is about 3698.5860811937. The cubic root of 13679539 is about 239.1610697429.

The spelling of 13679539 in words is "thirteen million, six hundred seventy-nine thousand, five hundred thirty-nine".