6143993 has 4 divisors (see below), whose sum is σ = 6150900. Its totient is φ = 6137088.

The previous prime is 6143957. The next prime is 6143999. The reversal of 6143993 is 3993416.

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 can be written as a sum of positive squares in 2 ways, for example, as 5697769 + 446224 = 2387^2 + 668^2 .

It is a cyclic number.

It is not a de Polignac number, because 6143993 - 2¹² = 6139897 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 (6143999) 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, 1880 + ... + 3977.

It is an arithmetic number, because the mean of its divisors is an integer number (1537725).

Almost surely, 2^6143993 is an apocalyptic number.

It is an amenable number.

6143993 is a deficient number, since it is larger than the sum of its proper divisors (6907).

6143993 is a wasteful number, since it uses less digits than its factorization.

6143993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6906.

The product of its digits is 17496, while the sum is 35.

The square root of 6143993 is about 2478.7079295472. The cubic root of 6143993 is about 183.1542092512.

The spelling of 6143993 in words is "six million, one hundred forty-three thousand, nine hundred ninety-three".