13963217 has 2 divisors, whose sum is σ = 13963218. Its totient is φ = 13963216.

The previous prime is 13963211. The next prime is 13963241. The reversal of 13963217 is 71236931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13512976 + 450241 = 3676^2 + 671^2 .

It is an emirp because it is prime and its reverse (71236931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13963217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13963211) 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, 6981608 + 6981609.

It is an arithmetic number, because the mean of its divisors is an integer number (6981609).

Almost surely, 2^13963217 is an apocalyptic number.

It is an amenable number.

13963217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13963217 is an equidigital number, since it uses as much as digits as its factorization.

13963217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 13963217 is about 3736.7388188098. The cubic root of 13963217 is about 240.8029644727.

The spelling of 13963217 in words is "thirteen million, nine hundred sixty-three thousand, two hundred seventeen".