13859959 has 4 divisors (see below), whose sum is σ = 13867416. Its totient is φ = 13852504.

The previous prime is 13859933. The next prime is 13859983. The reversal of 13859959 is 95995831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13859959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13859929) 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, 1572 + ... + 5494.

It is an arithmetic number, because the mean of its divisors is an integer number (3466854).

Almost surely, 2^13859959 is an apocalyptic number.

13859959 is a deficient number, since it is larger than the sum of its proper divisors (7457).

13859959 is an equidigital number, since it uses as much as digits as its factorization.

13859959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7456.

The product of its digits is 437400, while the sum is 49.

The square root of 13859959 is about 3722.8965873363. The cubic root of 13859959 is about 240.2079158919.

The spelling of 13859959 in words is "thirteen million, eight hundred fifty-nine thousand, nine hundred fifty-nine".