13919169 has 16 divisors (see below), whose sum is σ = 20312064. Its totient is φ = 8408400.

The previous prime is 13919161. The next prime is 13919173. The reversal of 13919169 is 96191931.

It is a happy number.

It is not a de Polignac number, because 13919169 - 2³ = 13919161 is a prime.

It is a super-2 number, since 2×13919169² = 387486531301122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13919161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14824 + ... + 15734.

It is an arithmetic number, because the mean of its divisors is an integer number (1269504).

Almost surely, 2^13919169 is an apocalyptic number.

It is an amenable number.

13919169 is a deficient number, since it is larger than the sum of its proper divisors (6392895).

13919169 is a wasteful number, since it uses less digits than its factorization.

13919169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388.

The product of its digits is 13122, while the sum is 39.

The square root of 13919169 is about 3730.8402538838. The cubic root of 13919169 is about 240.5494874989.

The spelling of 13919169 in words is "thirteen million, nine hundred nineteen thousand, one hundred sixty-nine".