8040891 has 4 divisors (see below), whose sum is σ = 10721192. Its totient is φ = 5360592.

The previous prime is 8040889. The next prime is 8040899. The reversal of 8040891 is 1980408.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 8040891 - 2¹ = 8040889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8040899) 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, 1340146 + ... + 1340151.

It is an arithmetic number, because the mean of its divisors is an integer number (2680298).

Almost surely, 2^8040891 is an apocalyptic number.

8040891 is a deficient number, since it is larger than the sum of its proper divisors (2680301).

8040891 is a wasteful number, since it uses less digits than its factorization.

8040891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680300.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 8040891 is about 2835.6464871348. The cubic root of 8040891 is about 200.3401793952.

The spelling of 8040891 in words is "eight million, forty thousand, eight hundred ninety-one".