13855743 has 24 divisors (see below), whose sum is σ = 21986640. Its totient is φ = 8338560.

The previous prime is 13855727. The next prime is 13855747. The reversal of 13855743 is 34755831.

13855743 is a `hidden beast` number, since 1 + 3 + 85 + 574 + 3 = 666.

It is not a de Polignac number, because 13855743 - 2⁴ = 13855727 is a prime.

It is a super-2 number, since 2×13855743² = 383963228164098, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13855698 and 13855707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13855747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16723 + ... + 17531.

It is an arithmetic number, because the mean of its divisors is an integer number (916110).

Almost surely, 2^13855743 is an apocalyptic number.

13855743 is a deficient number, since it is larger than the sum of its proper divisors (8130897).

13855743 is a wasteful number, since it uses less digits than its factorization.

13855743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 996 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 13855743 is about 3722.3303184967. The cubic root of 13855743 is about 240.1835574919.

The spelling of 13855743 in words is "thirteen million, eight hundred fifty-five thousand, seven hundred forty-three".