8091940 has 12 divisors (see below), whose sum is σ = 16993116. Its totient is φ = 3236768.

The previous prime is 8091931. The next prime is 8091959. The reversal of 8091940 is 491908.

It can be written as a sum of positive squares in 2 ways, for example, as 3873024 + 4218916 = 1968^2 + 2054^2 .

It is an unprimeable number.

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, 202279 + ... + 202318.

It is an arithmetic number, because the mean of its divisors is an integer number (1416093).

Almost surely, 2^8091940 is an apocalyptic number.

It is an amenable number.

8091940 is an abundant number, since it is smaller than the sum of its proper divisors (8901176).

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

8091940 is a wasteful number, since it uses less digits than its factorization.

8091940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404606 (or 404604 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 8091940 is about 2844.6335440615. The cubic root of 8091940 is about 200.7632502070.

The spelling of 8091940 in words is "eight million, ninety-one thousand, nine hundred forty".