13713779 has 2 divisors, whose sum is σ = 13713780. Its totient is φ = 13713778.

The previous prime is 13713769. The next prime is 13713823. The reversal of 13713779 is 97731731.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13713779 is a prime.

It is not a weakly prime, because it can be changed into another prime (13713769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6856889 + 6856890.

It is an arithmetic number, because the mean of its divisors is an integer number (6856890).

Almost surely, 2^13713779 is an apocalyptic number.

13713779 is a deficient number, since it is larger than the sum of its proper divisors (1).

13713779 is an equidigital number, since it uses as much as digits as its factorization.

13713779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27783, while the sum is 38.

The square root of 13713779 is about 3703.2119842105. The cubic root of 13713779 is about 239.3604442062.

The spelling of 13713779 in words is "thirteen million, seven hundred thirteen thousand, seven hundred seventy-nine".