13979549 has 2 divisors, whose sum is σ = 13979550. Its totient is φ = 13979548.

The previous prime is 13979533. The next prime is 13979579. The reversal of 13979549 is 94597931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13823524 + 156025 = 3718^2 + 395^2 .

It is an emirp because it is prime and its reverse (94597931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13979549 - 2⁴ = 13979533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13979579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6989774 + 6989775.

It is an arithmetic number, because the mean of its divisors is an integer number (6989775).

Almost surely, 2^13979549 is an apocalyptic number.

It is an amenable number.

13979549 is a deficient number, since it is larger than the sum of its proper divisors (1).

13979549 is an equidigital number, since it uses as much as digits as its factorization.

13979549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 47.

The square root of 13979549 is about 3738.9235081772. The cubic root of 13979549 is about 240.8968125138.

The spelling of 13979549 in words is "thirteen million, nine hundred seventy-nine thousand, five hundred forty-nine".