8043993 has 6 divisors (see below), whose sum is σ = 11619114. Its totient is φ = 5362656.

The previous prime is 8043983. The next prime is 8044013. The reversal of 8043993 is 3993408.

It can be written as a sum of positive squares in only one way, i.e., 4460544 + 3583449 = 2112^2 + 1893^2 .

It is not a de Polignac number, because 8043993 - 2⁴ = 8043977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8043923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 446880 + ... + 446897.

It is an arithmetic number, because the mean of its divisors is an integer number (1936519).

Almost surely, 2^8043993 is an apocalyptic number.

It is an amenable number.

8043993 is a deficient number, since it is larger than the sum of its proper divisors (3575121).

8043993 is a wasteful number, since it uses less digits than its factorization.

8043993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893783 (or 893780 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 8043993 is about 2836.1933996115. The cubic root of 8043993 is about 200.3659383705.

The spelling of 8043993 in words is "eight million, forty-three thousand, nine hundred ninety-three".