920919109 has 8 divisors (see below), whose sum is σ = 1006691040. Its totient is φ = 835489200.

The previous prime is 920919049. The next prime is 920919133. The reversal of 920919109 is 901919029.

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 920919109 - 2⁷ = 920918981 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 (920919169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79854 + ... + 90655.

It is an arithmetic number, because the mean of its divisors is an integer number (125836380).

Almost surely, 2^920919109 is an apocalyptic number.

It is an amenable number.

920919109 is a deficient number, since it is larger than the sum of its proper divisors (85771931).

920919109 is a wasteful number, since it uses less digits than its factorization.

920919109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171011.

The product of its (nonzero) digits is 13122, while the sum is 40.

The square root of 920919109 is about 30346.6490571859. The cubic root of 920919109 is about 972.9126007208.

It can be divided in two parts, 920 and 919109, that added together give a palindrome (920029).

The spelling of 920919109 in words is "nine hundred twenty million, nine hundred nineteen thousand, one hundred nine".