8091140 has 12 divisors (see below), whose sum is σ = 16991436. Its totient is φ = 3236448.

The previous prime is 8091119. The next prime is 8091143. The reversal of 8091140 is 411908.

It can be written as a sum of positive squares in 2 ways, for example, as 5924356 + 2166784 = 2434^2 + 1472^2 .

It is not an unprimeable number, because it can be changed into a prime (8091143) 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, 202259 + ... + 202298.

It is an arithmetic number, because the mean of its divisors is an integer number (1415953).

Almost surely, 2^8091140 is an apocalyptic number.

It is an amenable number.

8091140 is an abundant number, since it is smaller than the sum of its proper divisors (8900296).

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

8091140 is a wasteful number, since it uses less digits than its factorization.

8091140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404566 (or 404564 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 8091140 is about 2844.4929249341. The cubic root of 8091140 is about 200.7566339158.

The spelling of 8091140 in words is "eight million, ninety-one thousand, one hundred forty".