921069109 has 8 divisors (see below), whose sum is σ = 964668672. Its totient is φ = 877765680.

The previous prime is 921069089. The next prime is 921069173. The reversal of 921069109 is 901960129.

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 921069109 - 2⁵ = 921069077 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 (921060109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67654 + ... + 80119.

It is an arithmetic number, because the mean of its divisors is an integer number (120583584).

Almost surely, 2^921069109 is an apocalyptic number.

It is an amenable number.

921069109 is a deficient number, since it is larger than the sum of its proper divisors (43599563).

921069109 is a wasteful number, since it uses less digits than its factorization.

921069109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148067.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 921069109 is about 30349.1203991154. The cubic root of 921069109 is about 972.9654207662.

The spelling of 921069109 in words is "nine hundred twenty-one million, sixty-nine thousand, one hundred nine".