13879047 has 16 divisors (see below), whose sum is σ = 22776320. Its totient is φ = 7320672.

The previous prime is 13879043. The next prime is 13879091. The reversal of 13879047 is 74097831.

It is not a de Polignac number, because 13879047 - 2² = 13879043 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 13878996 and 13879014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13879043) 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 15 ways as a sum of consecutive naturals, for example, 25147 + ... + 25692.

It is an arithmetic number, because the mean of its divisors is an integer number (1423520).

Almost surely, 2^13879047 is an apocalyptic number.

13879047 is a deficient number, since it is larger than the sum of its proper divisors (8897273).

13879047 is a wasteful number, since it uses less digits than its factorization.

13879047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50862.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 13879047 is about 3725.4593005427. The cubic root of 13879047 is about 240.3181371280.

The spelling of 13879047 in words is "thirteen million, eight hundred seventy-nine thousand, forty-seven".