8109345 has 16 divisors (see below), whose sum is σ = 13170240. Its totient is φ = 4259904.

The previous prime is 8109341. The next prime is 8109359. The reversal of 8109345 is 5439018.

It is not a de Polignac number, because 8109345 - 2² = 8109341 is a prime.

It is a super-2 number, since 2×8109345² = 131522952658050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8109341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3030 + ... + 5039.

It is an arithmetic number, because the mean of its divisors is an integer number (823140).

Almost surely, 2^8109345 is an apocalyptic number.

It is an amenable number.

8109345 is a deficient number, since it is larger than the sum of its proper divisors (5060895).

8109345 is a wasteful number, since it uses less digits than its factorization.

8109345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8144.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 8109345 is about 2847.6911700534. The cubic root of 8109345 is about 200.9070880698.

The spelling of 8109345 in words is "eight million, one hundred nine thousand, three hundred forty-five".