9109021827 has 6 divisors (see below), whose sum is σ = 12145582852. Its totient is φ = 6072571012.

The previous prime is 9109021799. The next prime is 9109021843. The reversal of 9109021827 is 7281209019.

It is not a de Polignac number, because 9109021827 - 2⁷ = 9109021699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9109021877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137758 + ... + 192860.

Almost surely, 2^9109021827 is an apocalyptic number.

9109021827 is a deficient number, since it is larger than the sum of its proper divisors (3036561025).

9109021827 is an frugal number, since it uses more digits than its factorization.

9109021827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110209 (or 55106 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 9109021827 is about 95441.1956494678. The cubic root of 9109021827 is about 2088.4491923531.

The spelling of 9109021827 in words is "nine billion, one hundred nine million, twenty-one thousand, eight hundred twenty-seven".