6889109 has 4 divisors (see below), whose sum is σ = 6957420. Its totient is φ = 6820800.

The previous prime is 6889087. The next prime is 6889133. The reversal of 6889109 is 9019886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5276209 + 1612900 = 2297^2 + 1270^2 .

It is a cyclic number.

It is not a de Polignac number, because 6889109 - 2¹⁶ = 6823573 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 (6889009) 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, 34004 + ... + 34205.

It is an arithmetic number, because the mean of its divisors is an integer number (1739355).

Almost surely, 2^6889109 is an apocalyptic number.

It is an amenable number.

6889109 is a deficient number, since it is larger than the sum of its proper divisors (68311).

6889109 is a wasteful number, since it uses less digits than its factorization.

6889109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68310.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 6889109 is about 2624.7112222109. The cubic root of 6889109 is about 190.2776089618.

The spelling of 6889109 in words is "six million, eight hundred eighty-nine thousand, one hundred nine".