13679389 has 4 divisors (see below), whose sum is σ = 13833180. Its totient is φ = 13525600.

The previous prime is 13679383. The next prime is 13679399. The reversal of 13679389 is 98397631.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7344100 + 6335289 = 2710^2 + 2517^2 .

It is a cyclic number.

It is not a de Polignac number, because 13679389 - 2²¹ = 11582237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13679383) 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, 76762 + ... + 76939.

It is an arithmetic number, because the mean of its divisors is an integer number (3458295).

Almost surely, 2^13679389 is an apocalyptic number.

It is an amenable number.

13679389 is a deficient number, since it is larger than the sum of its proper divisors (153791).

13679389 is an equidigital number, since it uses as much as digits as its factorization.

13679389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153790.

The product of its digits is 244944, while the sum is 46.

The square root of 13679389 is about 3698.5658031188. The cubic root of 13679389 is about 239.1601955836.

The spelling of 13679389 in words is "thirteen million, six hundred seventy-nine thousand, three hundred eighty-nine".