13859918 has 8 divisors (see below), whose sum is σ = 21053280. Its totient is φ = 6842160.

The previous prime is 13859917. The next prime is 13859929. The reversal of 13859918 is 81995831.

It is a happy number.

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

It is a super-3 number, since 3×13859918³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13859917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43703 + ... + 44018.

It is an arithmetic number, because the mean of its divisors is an integer number (2631660).

Almost surely, 2^13859918 is an apocalyptic number.

13859918 is a deficient number, since it is larger than the sum of its proper divisors (7193362).

13859918 is an equidigital number, since it uses as much as digits as its factorization.

13859918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87802.

The product of its digits is 77760, while the sum is 44.

The square root of 13859918 is about 3722.8910808671. The cubic root of 13859918 is about 240.2076790337.

The spelling of 13859918 in words is "thirteen million, eight hundred fifty-nine thousand, nine hundred eighteen".