13977963 has 6 divisors (see below), whose sum is σ = 20190404. Its totient is φ = 9318636.

The previous prime is 13977949. The next prime is 13977989. The reversal of 13977963 is 36977931.

13977963 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13977963 - 2¹⁴ = 13961579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13977923) 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 5 ways as a sum of consecutive naturals, for example, 776545 + ... + 776562.

Almost surely, 2^13977963 is an apocalyptic number.

13977963 is a deficient number, since it is larger than the sum of its proper divisors (6212441).

13977963 is a wasteful number, since it uses less digits than its factorization.

13977963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553113 (or 1553110 counting only the distinct ones).

The product of its digits is 214326, while the sum is 45.

The square root of 13977963 is about 3738.7114090285. The cubic root of 13977963 is about 240.8877021390.

The spelling of 13977963 in words is "thirteen million, nine hundred seventy-seven thousand, nine hundred sixty-three".