13878879 has 8 divisors (see below), whose sum is σ = 21148800. Its totient is φ = 7930776.

The previous prime is 13878859. The next prime is 13878881. The reversal of 13878879 is 97887831.

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

It is not a de Polignac number, because 13878879 - 2⁷ = 13878751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13878859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330429 + ... + 330470.

It is an arithmetic number, because the mean of its divisors is an integer number (2643600).

Almost surely, 2^13878879 is an apocalyptic number.

13878879 is a deficient number, since it is larger than the sum of its proper divisors (7269921).

13878879 is an equidigital number, since it uses as much as digits as its factorization.

13878879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660909.

The product of its digits is 677376, while the sum is 51.

The square root of 13878879 is about 3725.4367529190. The cubic root of 13878879 is about 240.3171674742.

The spelling of 13878879 in words is "thirteen million, eight hundred seventy-eight thousand, eight hundred seventy-nine".