8140971 has 4 divisors (see below), whose sum is σ = 10854632. Its totient is φ = 5427312.

The previous prime is 8140963. The next prime is 8140981. The reversal of 8140971 is 1790418.

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

It is not a de Polignac number, because 8140971 - 2³ = 8140963 is a prime.

It is a Duffinian number.

8140971 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8140961) 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, 1356826 + ... + 1356831.

It is an arithmetic number, because the mean of its divisors is an integer number (2713658).

Almost surely, 2^8140971 is an apocalyptic number.

8140971 is a deficient number, since it is larger than the sum of its proper divisors (2713661).

8140971 is a wasteful number, since it uses less digits than its factorization.

8140971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713660.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 8140971 is about 2853.2386861249. The cubic root of 8140971 is about 201.1679248156.

The spelling of 8140971 in words is "eight million, one hundred forty thousand, nine hundred seventy-one".