13779963 has 10 divisors (see below), whose sum is σ = 20585004. Its totient is φ = 9186588.

The previous prime is 13779949. The next prime is 13779971. The reversal of 13779963 is 36997731.

It is not a de Polignac number, because 13779963 - 2¹⁷ = 13648891 is a prime.

It is a super-3 number, since 3×13779963³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (13779973) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 84981 + ... + 85142.

Almost surely, 2^13779963 is an apocalyptic number.

13779963 is a deficient number, since it is larger than the sum of its proper divisors (6805041).

13779963 is an equidigital number, since it uses as much as digits as its factorization.

13779963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170135 (or 170126 counting only the distinct ones).

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

The square root of 13779963 is about 3712.1372550055. The cubic root of 13779963 is about 239.7448851645.

The spelling of 13779963 in words is "thirteen million, seven hundred seventy-nine thousand, nine hundred sixty-three".