13859387 has 8 divisors (see below), whose sum is σ = 14349312. Its totient is φ = 13372200.

The previous prime is 13859357. The next prime is 13859393. The reversal of 13859387 is 78395831.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13859387 - 2⁶ = 13859323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13859357) 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, 19712 + ... + 20402.

It is an arithmetic number, because the mean of its divisors is an integer number (1793664).

Almost surely, 2^13859387 is an apocalyptic number.

13859387 is a deficient number, since it is larger than the sum of its proper divisors (489925).

13859387 is an equidigital number, since it uses as much as digits as its factorization.

13859387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369.

The product of its digits is 181440, while the sum is 44.

The square root of 13859387 is about 3722.8197646408. The cubic root of 13859387 is about 240.2046113891.

The spelling of 13859387 in words is "thirteen million, eight hundred fifty-nine thousand, three hundred eighty-seven".