13943853 has 64 divisors (see below), whose sum is σ = 27187200. Its totient is φ = 6842880.

The previous prime is 13943849. The next prime is 13943863. The reversal of 13943853 is 35834931.

It is not a de Polignac number, because 13943853 - 2² = 13943849 is a prime.

It is a super-3 number, since 3×13943853³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13943843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39325 + ... + 39677.

It is an arithmetic number, because the mean of its divisors is an integer number (424800).

Almost surely, 2^13943853 is an apocalyptic number.

It is an amenable number.

13943853 is a deficient number, since it is larger than the sum of its proper divisors (13243347).

13943853 is a wasteful number, since it uses less digits than its factorization.

13943853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 393 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 13943853 is about 3734.1468905227. The cubic root of 13943853 is about 240.6915988814.

The spelling of 13943853 in words is "thirteen million, nine hundred forty-three thousand, eight hundred fifty-three".