8040789 has 20 divisors (see below), whose sum is σ = 12244716. Its totient is φ = 5256576.

The previous prime is 8040787. The next prime is 8040793. The reversal of 8040789 is 9870408.

It can be written as a sum of positive squares in 2 ways, for example, as 2480625 + 5560164 = 1575^2 + 2358^2 .

It is not a de Polignac number, because 8040789 - 2¹ = 8040787 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8040787) 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 19 ways as a sum of consecutive naturals, for example, 3357 + ... + 5229.

Almost surely, 2^8040789 is an apocalyptic number.

It is an amenable number.

8040789 is a deficient number, since it is larger than the sum of its proper divisors (4203927).

8040789 is a wasteful number, since it uses less digits than its factorization.

8040789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938 (or 1929 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 8040789 is about 2835.6285017611. The cubic root of 8040789 is about 200.3393322758.

The spelling of 8040789 in words is "eight million, forty thousand, seven hundred eighty-nine".