13994779 has 2 divisors, whose sum is σ = 13994780. Its totient is φ = 13994778.

The previous prime is 13994731. The next prime is 13994797. The reversal of 13994779 is 97749931.

It is a happy number.

Together with next prime (13994797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13994779 - 2¹¹ = 13992731 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13964779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6997389 + 6997390.

It is an arithmetic number, because the mean of its divisors is an integer number (6997390).

Almost surely, 2^13994779 is an apocalyptic number.

13994779 is a deficient number, since it is larger than the sum of its proper divisors (1).

13994779 is an equidigital number, since it uses as much as digits as its factorization.

13994779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 49.

The square root of 13994779 is about 3740.9596362431. The cubic root of 13994779 is about 240.9842623287.

The spelling of 13994779 in words is "thirteen million, nine hundred ninety-four thousand, seven hundred seventy-nine".