8191916 has 12 divisors (see below), whose sum is σ = 14497560. Its totient is φ = 4049760.

The previous prime is 8191913. The next prime is 8191921. The reversal of 8191916 is 6191918.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (8191913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11150 + ... + 11861.

It is an arithmetic number, because the mean of its divisors is an integer number (1208130).

Almost surely, 2^8191916 is an apocalyptic number.

It is an amenable number.

8191916 is a deficient number, since it is larger than the sum of its proper divisors (6305644).

8191916 is a wasteful number, since it uses less digits than its factorization.

8191916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23104 (or 23102 counting only the distinct ones).

The product of its digits is 3888, while the sum is 35.

The square root of 8191916 is about 2862.1523369660. The cubic root of 8191916 is about 201.5866789615.

The spelling of 8191916 in words is "eight million, one hundred ninety-one thousand, nine hundred sixteen".