13979197 has 2 divisors, whose sum is σ = 13979198. Its totient is φ = 13979196.

The previous prime is 13979191. The next prime is 13979209. The reversal of 13979197 is 79197931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11383876 + 2595321 = 3374^2 + 1611^2 .

It is a cyclic number.

It is not a de Polignac number, because 13979197 - 2¹¹ = 13977149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13979191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6989598 + 6989599.

It is an arithmetic number, because the mean of its divisors is an integer number (6989599).

Almost surely, 2^13979197 is an apocalyptic number.

It is an amenable number.

13979197 is a deficient number, since it is larger than the sum of its proper divisors (1).

13979197 is an equidigital number, since it uses as much as digits as its factorization.

13979197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107163, while the sum is 46.

The square root of 13979197 is about 3738.8764355084. The cubic root of 13979197 is about 240.8947905986.

The spelling of 13979197 in words is "thirteen million, nine hundred seventy-nine thousand, one hundred ninety-seven".