13984179217 has 2 divisors, whose sum is σ = 13984179218. Its totient is φ = 13984179216.

The previous prime is 13984179211. The next prime is 13984179269. The reversal of 13984179217 is 71297148931.

It is a happy number.

It is an a-pointer prime, because the next prime (13984179269) can be obtained adding 13984179217 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10327437376 + 3656741841 = 101624^2 + 60471^2 .

It is a cyclic number.

It is not a de Polignac number, because 13984179217 - 2³¹ = 11836695569 is a prime.

It is not a weakly prime, because it can be changed into another prime (13984179211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6992089608 + 6992089609.

It is an arithmetic number, because the mean of its divisors is an integer number (6992089609).

Almost surely, 2^13984179217 is an apocalyptic number.

It is an amenable number.

13984179217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13984179217 is an equidigital number, since it uses as much as digits as its factorization.

13984179217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 52.

The spelling of 13984179217 in words is "thirteen billion, nine hundred eighty-four million, one hundred seventy-nine thousand, two hundred seventeen".