13977443 has 4 divisors (see below), whose sum is σ = 13989360. Its totient is φ = 13965528.

The previous prime is 13977427. The next prime is 13977461. The reversal of 13977443 is 34477931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13977443 - 2⁴ = 13977427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13977397 and 13977406.

It is not an unprimeable number, because it can be changed into a prime (13977463) 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 in 3 ways as a sum of consecutive naturals, for example, 3980 + ... + 6617.

It is an arithmetic number, because the mean of its divisors is an integer number (3497340).

Almost surely, 2^13977443 is an apocalyptic number.

13977443 is a deficient number, since it is larger than the sum of its proper divisors (11917).

13977443 is a wasteful number, since it uses less digits than its factorization.

13977443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11916.

The product of its digits is 63504, while the sum is 38.

The square root of 13977443 is about 3738.6418657047. The cubic root of 13977443 is about 240.8847149808.

The spelling of 13977443 in words is "thirteen million, nine hundred seventy-seven thousand, four hundred forty-three".