8919109 has 8 divisors (see below), whose sum is σ = 9215000. Its totient is φ = 8626176.

The previous prime is 8919077. The next prime is 8919121. The reversal of 8919109 is 9019198.

It can be written as a sum of positive squares in 4 ways, for example, as 1612900 + 7306209 = 1270^2 + 2703^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8919109 - 2⁵ = 8919077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8919139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6517 + ... + 7765.

It is an arithmetic number, because the mean of its divisors is an integer number (1151875).

Almost surely, 2^8919109 is an apocalyptic number.

It is an amenable number.

8919109 is a deficient number, since it is larger than the sum of its proper divisors (295891).

8919109 is a wasteful number, since it uses less digits than its factorization.

8919109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 8919109 is about 2986.4877364557. The cubic root of 8919109 is about 207.3833204765.

It can be divided in two parts, 891 and 9109, that added together give a 4-th power (10000 = 10⁴).

The spelling of 8919109 in words is "eight million, nine hundred nineteen thousand, one hundred nine".