13943893 has 8 divisors (see below), whose sum is σ = 15240960. Its totient is φ = 12699840.

The previous prime is 13943873. The next prime is 13943933. The reversal of 13943893 is 39834931.

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 13943893 - 2²¹ = 11846741 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

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 7 ways as a sum of consecutive naturals, for example, 12703 + ... + 13756.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^13943893 is an apocalyptic number.

It is an amenable number.

13943893 is a deficient number, since it is larger than the sum of its proper divisors (1297067).

13943893 is a wasteful number, since it uses less digits than its factorization.

13943893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26507.

The product of its digits is 69984, while the sum is 40.

The square root of 13943893 is about 3734.1522464945. The cubic root of 13943893 is about 240.6918290343.

The spelling of 13943893 in words is "thirteen million, nine hundred forty-three thousand, eight hundred ninety-three".