13856479 has 32 divisors (see below), whose sum is σ = 18506880. Its totient is φ = 10123776.

The previous prime is 13856441. The next prime is 13856509. The reversal of 13856479 is 97465831.

It is not a de Polignac number, because 13856479 - 2¹³ = 13848287 is a prime.

Its product of digits (181440) is a multiple of the sum of its prime divisors (90).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13856279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261417 + ... + 261469.

It is an arithmetic number, because the mean of its divisors is an integer number (578340).

Almost surely, 2^13856479 is an apocalyptic number.

13856479 is a deficient number, since it is larger than the sum of its proper divisors (4650401).

13856479 is an equidigital number, since it uses as much as digits as its factorization.

13856479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 90 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 13856479 is about 3722.4291799845. The cubic root of 13856479 is about 240.1878101682.

The spelling of 13856479 in words is "thirteen million, eight hundred fifty-six thousand, four hundred seventy-nine".