9288086721 has 8 divisors (see below), whose sum is σ = 12419601600. Its totient is φ = 6174314832.

The previous prime is 9288086713. The next prime is 9288086729. The reversal of 9288086721 is 1276808829.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9288086713) and next prime (9288086729).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9288086721 - 2³ = 9288086713 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9288086729) 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, 4434525 + ... + 4436618.

It is an arithmetic number, because the mean of its divisors is an integer number (1552450200).

Almost surely, 2^9288086721 is an apocalyptic number.

It is an amenable number.

9288086721 is a deficient number, since it is larger than the sum of its proper divisors (3131514879).

9288086721 is a wasteful number, since it uses less digits than its factorization.

9288086721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8871495.

The product of its (nonzero) digits is 774144, while the sum is 51.

The square root of 9288086721 is about 96374.7203420067. The cubic root of 9288086721 is about 2102.0453783775.

The spelling of 9288086721 in words is "nine billion, two hundred eighty-eight million, eighty-six thousand, seven hundred twenty-one".