13879378 has 8 divisors (see below), whose sum is σ = 22043772. Its totient is φ = 6531456.

The previous prime is 13879357. The next prime is 13879379. The reversal of 13879378 is 87397831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11309769 + 2569609 = 3363^2 + 1603^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13879379) 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 3 ways as a sum of consecutive naturals, for example, 204075 + ... + 204142.

Almost surely, 2^13879378 is an apocalyptic number.

13879378 is a deficient number, since it is larger than the sum of its proper divisors (8164394).

13879378 is a wasteful number, since it uses less digits than its factorization.

13879378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408236.

The product of its digits is 254016, while the sum is 46.

The square root of 13879378 is about 3725.5037243304. The cubic root of 13879378 is about 240.3200475538.

The spelling of 13879378 in words is "thirteen million, eight hundred seventy-nine thousand, three hundred seventy-eight".