13936913 has 2 divisors, whose sum is σ = 13936914. Its totient is φ = 13936912.

The previous prime is 13936891. The next prime is 13936927. The reversal of 13936913 is 31963931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13786369 + 150544 = 3713^2 + 388^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13936913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13936963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6968456 + 6968457.

It is an arithmetic number, because the mean of its divisors is an integer number (6968457).

Almost surely, 2^13936913 is an apocalyptic number.

It is an amenable number.

13936913 is a deficient number, since it is larger than the sum of its proper divisors (1).

13936913 is an equidigital number, since it uses as much as digits as its factorization.

13936913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122, while the sum is 35.

The square root of 13936913 is about 3733.2175130844. The cubic root of 13936913 is about 240.6516606879.

The spelling of 13936913 in words is "thirteen million, nine hundred thirty-six thousand, nine hundred thirteen".