9780109 has 4 divisors (see below), whose sum is σ = 9794016. Its totient is φ = 9766204.

The previous prime is 9780101. The next prime is 9780131. The reversal of 9780109 is 9010879.

9780109 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 9780109 - 2³ = 9780101 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 (9780101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5839 + ... + 7324.

It is an arithmetic number, because the mean of its divisors is an integer number (2448504).

Almost surely, 2^9780109 is an apocalyptic number.

It is an amenable number.

9780109 is a deficient number, since it is larger than the sum of its proper divisors (13907).

9780109 is a wasteful number, since it uses less digits than its factorization.

9780109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13906.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 9780109 is about 3127.3165813521. The cubic root of 9780109 is about 213.8526149114.

It can be divided in two parts, 9780 and 109, that added together give a palindrome (9889).

The spelling of 9780109 in words is "nine million, seven hundred eighty thousand, one hundred nine".