8140891 has 8 divisors (see below), whose sum is σ = 8928000. Its totient is φ = 7361640.

The previous prime is 8140849. The next prime is 8140897. The reversal of 8140891 is 1980418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8140891 - 2⁷ = 8140763 is a prime.

It is a Duffinian number.

8140891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8140897) 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 7 ways as a sum of consecutive naturals, for example, 330 + ... + 4048.

It is an arithmetic number, because the mean of its divisors is an integer number (1116000).

Almost surely, 2^8140891 is an apocalyptic number.

8140891 is a deficient number, since it is larger than the sum of its proper divisors (787109).

8140891 is a wasteful number, since it uses less digits than its factorization.

8140891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3929.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 8140891 is about 2853.2246669339. The cubic root of 8140891 is about 201.1672658652.

The spelling of 8140891 in words is "eight million, one hundred forty thousand, eight hundred ninety-one".