8043990 has 16 divisors (see below), whose sum is σ = 19305648. Its totient is φ = 2145056.

The previous prime is 8043983. The next prime is 8044013. The reversal of 8043990 is 993408.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134037 + ... + 134096.

It is an arithmetic number, because the mean of its divisors is an integer number (1206603).

Almost surely, 2^8043990 is an apocalyptic number.

8043990 is an abundant number, since it is smaller than the sum of its proper divisors (11261658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8043990 is a wasteful number, since it uses less digits than its factorization.

8043990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268143.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 8043990 is about 2836.1928707336. The cubic root of 8043990 is about 200.3659134617.

The spelling of 8043990 in words is "eight million, forty-three thousand, nine hundred ninety".