8991109069 has 8 divisors (see below), whose sum is σ = 9119725632. Its totient is φ = 8862547680.

The previous prime is 8991109067. The next prime is 8991109103. The reversal of 8991109069 is 9609011998.

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 8991109069 - 2¹ = 8991109067 is a prime.

It is a super-2 number, since 2×8991109069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8991109067) 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, 404017 + ... + 425689.

It is an arithmetic number, because the mean of its divisors is an integer number (1139965704).

Almost surely, 2^8991109069 is an apocalyptic number.

It is an amenable number.

8991109069 is a deficient number, since it is larger than the sum of its proper divisors (128616563).

8991109069 is a wasteful number, since it uses less digits than its factorization.

8991109069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27587.

The product of its (nonzero) digits is 314928, while the sum is 52.

The square root of 8991109069 is about 94821.4589056718. The cubic root of 8991109069 is about 2079.3986387923.

The spelling of 8991109069 in words is "eight billion, nine hundred ninety-one million, one hundred nine thousand, sixty-nine".