13499279 has 2 divisors, whose sum is σ = 13499280. Its totient is φ = 13499278.

The previous prime is 13499273. The next prime is 13499281. The reversal of 13499279 is 97299431.

It is a strong prime.

It is an emirp because it is prime and its reverse (97299431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13499279 is a prime.

Together with 13499281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13499273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6749639 + 6749640.

It is an arithmetic number, because the mean of its divisors is an integer number (6749640).

Almost surely, 2^13499279 is an apocalyptic number.

13499279 is a deficient number, since it is larger than the sum of its proper divisors (1).

13499279 is an equidigital number, since it uses as much as digits as its factorization.

13499279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 44.

The square root of 13499279 is about 3674.1364971922. The cubic root of 13499279 is about 238.1059187710.

The spelling of 13499279 in words is "thirteen million, four hundred ninety-nine thousand, two hundred seventy-nine".