8040989 has 4 divisors (see below), whose sum is σ = 8772000. Its totient is φ = 7309980.

The previous prime is 8040947. The next prime is 8041003. The reversal of 8040989 is 9890408.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8040989 - 2¹² = 8036893 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 (8040919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365489 + ... + 365510.

It is an arithmetic number, because the mean of its divisors is an integer number (2193000).

Almost surely, 2^8040989 is an apocalyptic number.

It is an amenable number.

8040989 is a deficient number, since it is larger than the sum of its proper divisors (731011).

8040989 is a wasteful number, since it uses less digits than its factorization.

8040989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731010.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 8040989 is about 2835.6637670923. The cubic root of 8040989 is about 200.3409932875.

The spelling of 8040989 in words is "eight million, forty thousand, nine hundred eighty-nine".