13943021 has 8 divisors (see below), whose sum is σ = 14117760. Its totient is φ = 13769728.

The previous prime is 13942987. The next prime is 13943029. The reversal of 13943021 is 12034931.

13943021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13943021 - 2¹⁴ = 13926637 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 (13943029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54125 + ... + 54381.

It is an arithmetic number, because the mean of its divisors is an integer number (1764720).

Almost surely, 2^13943021 is an apocalyptic number.

It is an amenable number.

13943021 is a deficient number, since it is larger than the sum of its proper divisors (174739).

13943021 is a wasteful number, since it uses less digits than its factorization.

13943021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 13943021 is about 3734.0354845663. The cubic root of 13943021 is about 240.6868116013.

Adding to 13943021 its reverse (12034931), we get a palindrome (25977952).

The spelling of 13943021 in words is "thirteen million, nine hundred forty-three thousand, twenty-one".