13679919 has 12 divisors (see below), whose sum is σ = 21556392. Its totient is φ = 8290800.

The previous prime is 13679903. The next prime is 13679927. The reversal of 13679919 is 91997631.

It is not a de Polignac number, because 13679919 - 2⁴ = 13679903 is a prime.

It is a super-2 number, since 2×13679919² = 374280367693122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13679929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68992 + ... + 69189.

It is an arithmetic number, because the mean of its divisors is an integer number (1796366).

Almost surely, 2^13679919 is an apocalyptic number.

13679919 is a deficient number, since it is larger than the sum of its proper divisors (7876473).

13679919 is a wasteful number, since it uses less digits than its factorization.

13679919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138198 (or 138195 counting only the distinct ones).

The product of its digits is 91854, while the sum is 45.

The square root of 13679919 is about 3698.6374518193. The cubic root of 13679919 is about 239.1632842514.

The spelling of 13679919 in words is "thirteen million, six hundred seventy-nine thousand, nine hundred nineteen".