13964779 has 2 divisors, whose sum is σ = 13964780. Its totient is φ = 13964778.

The previous prime is 13964773. The next prime is 13964807. The reversal of 13964779 is 97746931.

13964779 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13964779 - 2³ = 13964771 is a prime.

It is not a weakly prime, because it can be changed into another prime (13964771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6982389 + 6982390.

It is an arithmetic number, because the mean of its divisors is an integer number (6982390).

Almost surely, 2^13964779 is an apocalyptic number.

13964779 is a deficient number, since it is larger than the sum of its proper divisors (1).

13964779 is an equidigital number, since it uses as much as digits as its factorization.

13964779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 46.

The square root of 13964779 is about 3736.9478187419. The cubic root of 13964779 is about 240.8119433063.

The spelling of 13964779 in words is "thirteen million, nine hundred sixty-four thousand, seven hundred seventy-nine".