13403279 has 2 divisors, whose sum is σ = 13403280. Its totient is φ = 13403278.

The previous prime is 13403267. The next prime is 13403281. The reversal of 13403279 is 97230431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13403279 is a prime.

Together with 13403281, 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 (13403209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6701639 + 6701640.

It is an arithmetic number, because the mean of its divisors is an integer number (6701640).

Almost surely, 2^13403279 is an apocalyptic number.

13403279 is a deficient number, since it is larger than the sum of its proper divisors (1).

13403279 is an equidigital number, since it uses as much as digits as its factorization.

13403279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 13403279 is about 3661.0488934184. The cubic root of 13403279 is about 237.5401461221.

The spelling of 13403279 in words is "thirteen million, four hundred three thousand, two hundred seventy-nine".