8190109 has 4 divisors (see below), whose sum is σ = 8195904. Its totient is φ = 8184316.

The previous prime is 8190097. The next prime is 8190113. The reversal of 8190109 is 9010918.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8190109 - 2⁷ = 8189981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8190179) 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, 774 + ... + 4120.

It is an arithmetic number, because the mean of its divisors is an integer number (2048976).

Almost surely, 2^8190109 is an apocalyptic number.

It is an amenable number.

8190109 is a deficient number, since it is larger than the sum of its proper divisors (5795).

8190109 is a wasteful number, since it uses less digits than its factorization.

8190109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5794.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 8190109 is about 2861.8366480287. The cubic root of 8190109 is about 201.5718556521.

The spelling of 8190109 in words is "eight million, one hundred ninety thousand, one hundred nine".