13959721337 has 2 divisors, whose sum is σ = 13959721338. Its totient is φ = 13959721336.

The previous prime is 13959721331. The next prime is 13959721339. The reversal of 13959721337 is 73312795931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9273497401 + 4686223936 = 96299^2 + 68456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13959721337 is a prime.

Together with 13959721339, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13959721331) 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, 6979860668 + 6979860669.

It is an arithmetic number, because the mean of its divisors is an integer number (6979860669).

Almost surely, 2^13959721337 is an apocalyptic number.

It is an amenable number.

13959721337 is a deficient number, since it is larger than the sum of its proper divisors (1).

13959721337 is an equidigital number, since it uses as much as digits as its factorization.

13959721337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1071630, while the sum is 50.

The spelling of 13959721337 in words is "thirteen billion, nine hundred fifty-nine million, seven hundred twenty-one thousand, three hundred thirty-seven".