13977727 has 2 divisors, whose sum is σ = 13977728. Its totient is φ = 13977726.

The previous prime is 13977713. The next prime is 13977737. The reversal of 13977727 is 72777931.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (72777931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13977727 - 2⁷ = 13977599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13977737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6988863 + 6988864.

It is an arithmetic number, because the mean of its divisors is an integer number (6988864).

Almost surely, 2^13977727 is an apocalyptic number.

13977727 is a deficient number, since it is larger than the sum of its proper divisors (1).

13977727 is an equidigital number, since it uses as much as digits as its factorization.

13977727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129654, while the sum is 43.

The square root of 13977727 is about 3738.6798472188. The cubic root of 13977727 is about 240.8863464379.

The spelling of 13977727 in words is "thirteen million, nine hundred seventy-seven thousand, seven hundred twenty-seven".